--- product_id: 2537555 title: "Boric Acid Roach and Silverfish Killer Powder w/Lure for Insects (16oz)" brand: "harris" price: "£10.72" currency: GBP in_stock: true reviews_count: 9 url: https://www.desertcart.co.uk/products/2537555-boric-acid-roach-and-silverfish-killer-powder-w-lure-insects store_origin: GB region: United Kingdom --- # Long-lasting effect for weeks Kills insects within 72 hours Food-grade lure attracts pests Boric Acid Roach and Silverfish Killer Powder w/Lure for Insects (16oz) **Brand:** harris **Price:** £10.72 **Availability:** ✅ In Stock ## Summary > 🚫🐜 Outsmart pests before they invade your space! ## Quick Answers - **What is this?** Boric Acid Roach and Silverfish Killer Powder w/Lure for Insects (16oz) by harris - **How much does it cost?** £10.72 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/2537555-boric-acid-roach-and-silverfish-killer-powder-w-lure-insects) ## Best For - harris enthusiasts ## Why This Product - Trusted harris brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted & Safe:** EPA-registered and made in the USA, safe for use around people and pets when used as directed. - • **Enduring Defense:** Keeps killing roaches and silverfish for weeks after application, ensuring your space stays pest-free longer. - • **Irresistible Bait:** Contains a food-grade lure that draws roaches out of hiding, maximizing kill rates and minimizing guesswork. - • **Rapid Roach Response:** Insects contacting the powder perish within 72 hours—fast action that you can count on. - • **Precision Application:** Ergonomic puffer bottle reaches tight, hard-to-access spots with ease for targeted pest control. ## Overview HARRIS Boric Acid Roach and Silverfish Killer Powder is a professional-grade, EPA-registered insecticide that combines long-lasting boric acid powder with a food-grade lure to attract and eliminate roaches, silverfish, and other household pests. Its fast-acting formula kills insects within 72 hours, while the easy-to-use puffer bottle ensures precise application in hard-to-reach areas. Trusted since 1924, HARRIS delivers proven, safe, and effective pest control solutions for modern homes. ## Description Problem solving has a long heritage at PF Harris. In 1924, two years after its founding, the company tackled the Calvin Coolidge White House, which had been overrun for years by roaches and water bugs. Harris’s product was so successful in eliminating the scourge that he was described on the front page of the Washington Times as a "vermin slayer" who has just fought a decisive, winning battle with a horde of cockroaches which infested the lower regions of the Executive Mansion. Over the course of the next few months Harris took “his final feast” to dozens of government buildings, including the Senate Office Building, the Department of Justice, the Supreme Court and Walter Reed Hospital. Success followed success: Each superintendent of the various buildings was highly satisfied with the results. The company today stays nimble enough to respond to changing market demands, leading the way in the development of numerous products, including natural insect repellents like Swamp Gator and Swamp Gnat which repel biting insects without using deet. Beyond the products it sells, Harris helps customers find easy and economical solutions to pest problems through helpful labeling, instructive videos and personal advice. It’s a brand with a reliable past and an innovative future. PF Harris is America’s oldest EPA-registered company. With more than 55 products, the company provides solutions to treat everything from roaches and bed bugs to scorpions and stink bugs. ## Features - Long Lasting - Continues to kill roaches, palmetto bugs, water bugs and silverfish for weeks after application as long as it's kept dry - Fast Acting - Insects coming into contact with the powder will die within 72 hours after initial contact - Easy Application - The puffer bottle makes application quick and simple for difficult to reach areas - Contains Irresistible Lure - Harris food grade lure attracts roaches from their hiding places - EPA Registered - Made in the USA & Registered with the Environmental Protection Agency (No. 3-10) for use in homes with people and pets ## Technical Specifications | Specification | Value | |---------------|-------| | Active Ingredients | boric acid | | Asin | B0026MD0G6 | | Best Sellers Rank | #76 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #11 in Pest Control Baits & Lures | | Brand Name | HARRIS | | Customer Reviews | 4.3 4.3 out of 5 stars (30,640) 4.3 out of 5 stars | | Global Trade Identification Number | 00072725000054 | | Included Components | home-pest-control-products | | Item Form | Powder | | Item Type Name | Roach Killer | | Item Weight | 16 ounces | | Manufacturer | HARRIS FAMOUS ROACH TABLETS | | Model Number | HRP-16 | | Part Number | HRP-16 | | Target Species | Insects | | Unit Count | 1 Count | | Upc | 072725000054 | ## Product Details - **Active Ingredients:** boric acid - **Brand:** HARRIS - **Item Form:** Powder - **Item Weight:** 16 ounces - **Target Species:** Insects ## Images ![Boric Acid Roach and Silverfish Killer Powder w/Lure for Insects (16oz) - Image 1](https://m.media-amazon.com/images/I/71B7SBjoDnL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: What do if they are in power outlets?** A: I had a 70 yr old house that was do infested after tenants were evicted that roaches covered the ceiling and were falling off. Obviously they were having a blast INSIDE the walls too. Since thete were several holes in the eall and missing outlet covers i just spooned it into all of them before patching and covering them. Used aspray for the ceiling one time when i started repairs. Left this at all the baseboards after everything else was cleaned. By the time i moved in 6 weeks later, NOT A SINGLE LIVE roach left!! I left the powder in place and maybe once a year if i happen to think of it i would puff a fine layer on it again. In over 10 years that i was there i never sae another roach or evidence of any. Rarely saw a stray ant. I swear by boric acid product over ANYTHING I've ever used, including exterminator services **Q: Is there a trick to getting the powder out? No matter how much I shake or squeeze nothing comes out of the tip.** A: Hello, Thank you for your question and I apologize for this inconvenience. Using scissors, carefully cut the very top of the tip. This will create a small opening that allows the powder to be puffed out. Best, John **Q: Is the bottle suppose to be halfway full when it arrives ?** A: The product bottle contains 16oz of product, typically, in my experience the bottle does not arrive completely full. I believe the empty “air space” is helpful in propelling product to desired area. **Q: Does this kill centipedes** A: when mixed with a small amount of meat...I find it might kill anything. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great to use against roaches *by on Reviewed in the United States September 7, 2024* *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.) ### ⭐⭐⭐⭐⭐ Scorpio Dolly *by on Reviewed in the United States August 8, 2026* This product is amazing! It is easy to use. Because it’s powder there’s no drying time needed. Already I am seeing roach reduction in my home. I like that it’s safe to use and application is very easy. It’s sent free and the price is very affordable. Definitely a keeper! ### ⭐⭐⭐⭐⭐ German cockroach 100% Killer - The best in the market.Need to do some extra tricks (Read Below) *by on Reviewed in the United States August 27, 2020* 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 downEvery 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 thatThe 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. ## Frequently Bought Together - HARRIS Boric Acid Roach and Silverfish Killer Powder w/Lure for Insects (16oz) - Harris Roach Tablets, Boric Acid Roach and Insects Killer with Lure, Alternative to Bait Traps (6oz, 145 Tablets), Yellow - Advion Cockroach Gel Bait, 4 Tubes x 30-Grams, 1 Plunger and 2 Tips, German Roach Insect Pest Control, Indoor and Outdoor Use, Roach Killer Gel for American, German and Other Major Cockroach Species --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/2537555-boric-acid-roach-and-silverfish-killer-powder-w-lure-insects](https://www.desertcart.co.uk/products/2537555-boric-acid-roach-and-silverfish-killer-powder-w-lure-insects) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-08-23*