Boric Acid Roach and Silverfish Killer Powder w/Lure for Insects (16oz)

*Note* I don't know how common this is, but the cap on the item I ordered was loose, so the Amazon box was full of white powder that was covering my other purchases when it arrived. So maybe don't order this item along with other products that you don't want to get covered with boric acid while in transit. Also, it took me a while to figure this out, but you have to cut off the tip of the applicator with scissors. The entire lid can screw off, and there's a replaceable cap, but there's no real way for the powder to get out unless/until you manually cut off the applicator tip. Anyway, I love this stuff. My previous method for dealing with roaches had been to chase after them with a heavy-duty flyswatter. The down sides to this are that, A) I, as a germophobe, hate having to clean bug guts off the flyswatter afterward, B) my aim isn't the best, so half the time I'd miss and the dang roach would escape, and C) for every individual roach you kill, there are who knows how many still hiding out of sight in the walls or whatever. Using boric acid is better because, not only can you use it proactively and passively (you can sprinkle it around your home and let it do its work regardless of whether you're paying attention or not), but I feel that it's a lot easier to clean up. I don't have to stress about cleaning an instrument and then cleaning everything the instrument and the water touched; all I have to do is just my regular vacuuming routine, then re-apply boric acid if necessary. Also, you don't have to have good aim if you see a roach, you just squirt the bottle in the right direction and you'll probably get a decent amount of power on the insect. From what I understand, the way the boric acid works is that if/when a roach walks through it, it sticks to their feet; then when they clean their feet, they ingest the poison, which eventually kills them. I also had to re-train myself to just toss powder on them and then let them run off - not only does that save me the time and stress of hunting, but with luck, it'll also kill more roaches behind the scenes when they interact with the contaminated one. In a recent incident, I encountered a roach and threw boric acid on it; it freaked out and ran around the living room, but couldn't find a way out (I practically have no furniture and I plug up all the holes I find). I noticed that its gait was starting to get irregular after a minute, so maybe the powder was affecting it without it even having to eat it. The roach eventually stumbled into a spider's web and couldn't get out; by the time I finally had time to dispose of it, it was very dead - not sure if that was because of the powder or the spider, but either way, good riddance. Note that a wide, thin layer that bugs can't help walking through is a lot better than a thick clump they can easily avoid. I'm also under the impression that boric acid loses its effectiveness if it gets wet; if nothing else, powder that gets wet will clump together and will no longer stick to the bugs' feet if they walk through it. Also, boric acid is probably not a good option for households with members, such as young children or pets, who might be tempted to eat the powder. But if you don't have to worry about vulnerable housemates, boric acid is great and I recommend it to help with roach problems. (I haven't seen it affect any other kinds of bugs, though.)

Its a good product but if you are buying this for german roaches plz don’t buy it . Its doesn’t work on german roaches . They didn’t got killed by this powder .

We used to have terribe infestations of "sugar ants". In a search for a solution I learned about Boric Acid. To start with, despite some CYA warning labels it is not harmful to humans. You may even find that dilute solutions are sometimes prescribed for applying to infants. I've never been able to find out why it kills roaches and ants but with certainty it does. One crazy sounding explanation I ran across thought it was because the boric acid formed tiny crystals that cut up the insides of the insects but that is too hard to digest as a sensible answer. Anyway, there is considerable erroneous information about how to use this stuff to kill sugar ants but here is the sure fire approach I've worked out through experience. What you are striving for is a sugary solution the contains boric acid. Boric acid is not very soluble. If you start with a sugar solution then try to add boric acid you are operating in the blind because it will be frustrating trying to dissolve the Boric acid. My approach is to add as much boric acid as can be dissolved to a quantity of boiling water, say a quart. Add a tablespoon of boric acid at a time. You will find it doesn't want to dissolve easily so just add a table spoon or less at a time until you can see no more will dissolve. While the water is still hot strain it so the excess is separated. This should now be what will turn out to be a supersaturated solution when it cools. Adding a few crystals to the cooled solution should cause the excess amount that is dissolved to crystalize out leaving you with a fully saturated solution to work with. The original formulation I read about prescribed dissolving as much sugar as the solution would absorb until you have a syrup that can then be left in appropriate containers to attract the ants. I have found however that using honey instead of sugar works best of all. Sugar ants are crazy for honey so I add a quantity of honey to the saturated solution and then it is time to rock. This is the part of the operation that always reminds me of the story of Moses and the rock. You have to have faith that the solution you leave for the ants will work. I usual resort to using the solution when ants are crawling all over whatever space is involved. Once they discover the glory hole you've put out for them, seemingly every ant within a mile is invited to the party. If you think you had some ants before you started the party you will soon find out it was nothing compared to the mob that suddenly appears. For at least a day or more this ant Woodstock Festival will rage and you will be asking what terrible folly you brought upon yourself. Then a morning or two later when you come to check on how things are going, there will be no ants in sight. It will be like a miracle has occurred. They will be gone, gone, gone. It is truly bizarre. I have used this remedy many times and there are never any dead ants laying about. All I can figure is that they must get terrible tummy aches and rush home to die quietly in bed. Some people say they carry the poison back to their nests and take down the whole tribe with them but I'm not certain that is true. Sugar ants do not have central governments. Rather, somewhere there is a nest that becomes the node of a network of nests each of which becomes the node for more nests, each node having its own queen or queens. You may kill off an entire node and it will take a long time for a forager from another node to rediscover the path to your kitchen again (because all the ones who did know are now in their graves) but in time a new explorer will show up but it can take months before that happens. I still have things to learn because sometimes they appear to not be attracted to the sugar. I've been told some of the little ants prefer protein substances and tend to eschew sugar but I'm not convinced that explains things.

3/31/26 THIS BORIC ACID IS AMAZING. THERE WAS EXTENSIVE WORK GOING ON NEXT DOOR TO MY SEMI DETACHED HOME. I NOTICED A FEW "FUNNY LOOKING" BUGS, HAVINAG A CERTAIB MEDICAL ISSUE , PRAY IN PESTICIDES WAS NOT AN OPTION. MY NEIGHBOR REOMMENDED HARRIS BORIC ACID. I BROUGHT IT RIGHT AWAY AND SYSTEMATICALLY APPLIED IN AAAAND AROUND WHERE I'D SEEN THE BUG, AND FILLED CRACKS AND BEHIND SINK. REFIGERATER, ETC. IN 3 DAYS I WAS KEEPING AN EYE FOR ANY SIGNS OF THE PESKY CRITTERS AND SAW NONE, BUT STILL APPLIED ANOTHER TIME LET IT SIT TWO DAYS. EASY CLEAN UP ITS NOT A POWDER IT'S LIKE LOOKS A BIT LIKE SUGAR. EASY CLEAN UP AN 2 WEEKS AND NO SIGNS. THIS IS MODERATELY PRICED SOPURCHASED A COUPLE BOTTLES AND LEFT ONE ON MY NEIGHBORS' STEP.!!

This helped clear up a bug problem in house I used to live in. It does take a few days but when used correctly, this gets the job done. Unless the bugs become immune. Be careful with pets and children. Easy to use, and you really don't need to use a lot. If you use too much, the bugs will go around not consume.

This product does work. I git rid if the entire population 99.9 in three weeks of regular use. The rest 1% am sure I will get rid of in the coming weeks. Just simply spreading the power on floor or in corners may not work. But I had to do a bit more from my side,rather than just simply dispersing or spreading the powder, I spread the powder in small "trays" (the lid of the food containers we get from restaurant) . Then I prepared a "bait" . I took some left over food,cockroach's favorite food (a little fried rice, potato french fries, oily fried fish and sugar) and mixed it with the powder. Then I placed a little bait in the mid of the each trays . Placing it mid made sure in order to eat they had to pass through the powder around it. I placed the trays in potential locations (kitchen, bathrooms ,dining rooms) during the night. I made sure I did clean the area and floor before I placed the tray. This will make sure the only available food is the one in the tray in those locations. The bait(good oily food) and powder will easily attract the german cockroachs as the lights go down Every night they came and ate the bait as well as powder. They passed through the powder and carried home the powder and food along with it. Next few mornings I just harvested 100s dead cockroach from tray and around the floor. Every night I gave them fresh "bait" (basically oily food with sugar mixed with PF Harris powder) and placed it in mid of tray. They should be able to get into tray and get out easily. Make sure the tray is NOT having TALl smooth surface . Better is paper tray (make one if you can ) . A pizza box is a good one for this purpose. Some may have went back to the nest and died. They took the powder and food carried along with them to nest. I read and researched that The female cockroach (are usually back in nest with egg) and with babies . They ate the powder on the body of these carrier cockroachs coming back and females and babies die. Once they all start dieing and stop getting the food they start eating the dead ones ( poisoned and having the powder on their bodies) and the rest remaining aldo die. It will be a chain reaction and the entire population is eliminated. The point here is you need to let the cockroach go back to the nest after it visited your tray. They will die eventually and will carry the bait and powder back home yk kill the others. Never kill (intentionally) the contaminated carrier cockroachs,let them go back to nest. It takes more than 72 hours to see a noticeable impact so don't get discouraged or disappointed. It takes time and very slow but effective and eliminates it from the roots. It worked for me .I have reduced it to 99.9 % for sure in last three I zm going to continue this for next one month until I achieve 100% success.

It worked for me when my neighbor in an apartment building gave me German roaches. It was an absolute nightmare and gave me so much anxiety anger and frustration for months!! Management treated their apartment several times and mine. Even bombed their places. It didn’t work. They were persistent. I was able to clear my apartment completely using this stuff. Believe me it works. They track this stuff back to their nest and other roaches when used properly.

Have not found any dead roaches that came free of charge with a used refrigerator. Never buy a used appliance or you might get free roaches up in the motor with it. Bought this for the problem. Have not found any dead roaches so minus a star. But it must be working on the little critters as they are not running a marathon but they are definitely not so fast as they were. They started coming out during the day where it was mainly at night in the dark. They are not so quick moving these days and they have started to slack up a bit. Buying more just in case I start seeing many again to prevent any reinfestations. I hate the nasty things and nothing else will eat a roach since they are not part of the food chain. Nothing will eat them so they must die. I can't put up with roaches in my home and the first time I have ever had any before but I was in dire need of a good refrigerator and it looked clean and like new. But it was not new, but it had been cleaned up well. I had been told that they didn't need the extra refrigerator when they bought a need one. So I bought the refrigerator complete with some horrible critters called roaches. I'm trying my best to be rid of the problem with them. First I noticed that they always came and went back under the fridge. Would move it and clean under it. They were in the back up in the motor. Thank God I've not seen them going to other appliances. I have not quite worked up more nerves of steel to come to the kitchen in the middle of the night. But I had been for a week and killing all I could. But I have turned off the lights for awhile and returned to see them but they are noticeably slower so it's getting too them. They started a few at a time coming out in daytime and they got killed. I try to kill everyone of the god forsaken critters from hell in my own opinion. I hate them. Might add some baking soda to the mixture since it's half gone but I put down quite a bit of it with all intentions of killing the evil enemy called roaches. I hate them. I was so unsuspecting since this appliance looked new but it was not quite new and it came with the army of roaches from the inside of the motor. It had been cool so guess that they had sought warmth back in the winter. It was cool but not below freezing when I bought the roaches with the nice refrigerator. Never will I ever buy a used appliance again. Kept it out for a couple nights and maybe a pregnant one came in there. But within days I started to notice that there's a huge problem. If I take off another star. It will be because I worked up enough courage to come to the kitchen in the middle of the night. My first time ever having this problem. But although I have not found them dead, they are not marathon runners and they are slow so I suspect that it is working on their central nervous system. They don't get the pets water to share any longer. My pets sleeps in my room with water but there are no roaches in there. Animals are not constantly looking around which was the first clue was seeing my cat clearly watching something. I found out what she was watching. She had never acted like that before so I looked to see a lot of adults running marathon fast as lightning. Well they turned to little tiny ones as I'm sure adults had babies. So they were numerous. They seemed to have slowed down quite a bit and staying long enough to kill them. They act like they are not quite sure about their next plan of attack. But I don't believe that so many died in a short amount of time. They do act differently so many have gotten into this boric acid roach killer. I have not found any dead laying anywhere so I assume that they are somewhere planning their next line of attack. Took up the pets water at night. They have no water. Unless they are all in hiding somewhere else but I don't trust the horrible little critters. The stuff did leave a very noticeable smell for several days after I started going around the fridge and then the other appliances. You must turn into super clean up after everything to help keep them from hitting the counters and everywhere else. I've left light off for an hour and went back in my kitchen and I killed all I saw. They are a lot slower than they were. They still seem to come from under the fridge. So they must still be there in the motor. It's not summer yet where they will not bother to stay warm. But they might. I have noticed less for sure. And they are slower. I'm on the definitely paranoid of bugs side and I cannot put up with roaches. I'm elderly and I have a heart condition so I have not worked up more nerves to come back to the kitchen in the middle of the night quite yet but I know that I can't slack off with them and I have more coming just in case I were to see the so many adults which definitely had babies in several different sizes. So I am sure that they are probably not dead and therefore definitely not gone. Probably planning their next line of defense. I'm afraid of them and I just can't put up with them not in our house. Not in my kitchen. For now I give 4 stars because of the lack of what I was seeing. And they don't run fast. They act sick and I wish that they would all die. The stuff did put off a smell that lasts several days day and night. Unless it's dead roaches up in the motor of the refrigerator. Not sure but air purifier will get any smell but that. It didn't smell like the boric acid itself so I could have lots of dead ones up in the motor behind the fridge. I am not able to take the cardboard stuff off myself and I am afraid to look. I had so many and they did stay confined to the fridge and the trash can which gets emptied often after knowing that. I will have to keep putting it out at least every couple weeks or less. But I want them all gone. I'll update every so often because I had a full infestation and the only thing that kept them confined to the fridge was the cool weather so that they needed warmth. But since the boric acid doesn't have any foul smell, I hope that it is dead roaches. Which will mean it starts killing right away but I don't know that yet. So I will update on this major problem I got free with the used refrigerator. Hopefully I will not see any more but I don't underestimate the horrible little critters. Ordered more due to the major lack of roaches and the running very slow, so it's getting to something for sure but I rather think they are probably planning their next defense. But I will update on this boric acid and the used refrigerator complete with many roaches.

Used bottle having half filled quantity, without a tip, not useful