--- product_id: 2225109 title: "1 Pint Gentrol Concentrate IGR Insect Growth Regulator" brand: "gentol insect growth regulator" price: "£112.08" currency: GBP in_stock: true reviews_count: 8 category: "Gentol Insect Growth Regulator" url: https://www.desertcart.co.uk/products/2225109-1-pint-gentrol-concentrate-igr-insect-growth-regulator store_origin: GB region: United Kingdom --- # 120-day long-term control Contains (S)-Hydroprene IGR active Penetrates deep cracks & crevices 1 Pint Gentrol Concentrate IGR Insect Growth Regulator **Brand:** gentol insect growth regulator **Price:** £112.08 **Availability:** ✅ In Stock ## Summary > 🛡️ Outsmart pests before they even grow up! ## Quick Answers - **What is this?** 1 Pint Gentrol Concentrate IGR Insect Growth Regulator by gentol insect growth regulator - **How much does it cost?** £112.08 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/2225109-1-pint-gentrol-concentrate-igr-insect-growth-regulator) ## Best For - gentol insect growth regulator enthusiasts ## Why This Product - Trusted gentol insect growth regulator brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Deep Reach Formula:** Travels into wall cavities and hidden spots pests love - • **Break the Pest Cycle:** Disrupts insect growth to stop reinfestation for 4 months - • **Versatile Application:** Use as spot treatment, fogging agent, or surface spray - • **Pro-Grade Pest Control:** Trusted by professionals for roaches, bed bugs & more - • **Cost-Effective Concentrate:** High potency formula dilutes for extended use and savings ## Overview Gentrol IGR Concentrate leverages the powerful insect growth regulator (S)-Hydroprene to prevent pests from maturing, effectively breaking infestation cycles for up to 120 days. Designed for targeted crack-and-crevice treatments as well as fogging, it penetrates deep into hidden pest habitats. Ideal for food handling areas and professional-grade pest management, this 1-pint concentrate offers versatile, long-lasting control against roaches, bed bugs, and other stored product pests. ## Description Gentrol IGR Concentrate travels deep into wall cavities, cracks and crevices, reaching the pests that other treatments miss. (S)-Hydroprene, the active ingredient, prevents pest larvae from progressing to the adult stage either causing sterility of adults or preventing the emergence of insects from the pupal stage — preventing future infestations. Stored product pests encounter (S)-Hydroprene the same way they encounter insecticides — contacting a treated surface. Review: Effective on roaches - great to tank mix with temprid for excellent roach control Review: Works on most pests and bed bugs* (read entire review) - I knew this product would work because it was recommended by the local pest and weed store which has been in business for over 30 years. But because some pests like Bed Bugs become resistant to pesticides, you have to use 2 ounces per gallon of diluted pesticide according to a newly released study. The label does does not have this new info. Even using 2 ounces with Suspend SC pesticide, I have a few "stray" bed bugs left. Did additional research and found out that adding a "kicker" such as MGK Exponent to pesticide solution makes the pesticide and IGR work more effectively. (Bayer Pesticide and MGK websites along with other sites) MGK Exponent actually short ciruits the bug's imune system, even on resistant pests, allowing the pesticide and growth inhibitor to work. I have also ordered MGK Evergreen (organic) 1% Pyrethrin Dust Insecticide and a duster bulb. A co-worker said after having her apartment was treated twice by professional exterminators, she had a few "stray" beg bugs left. And after using the Evergreen, it killed the remaining beg bugs. Apparently the organic Pyretrhin works on pests that are resistant to synthetic Pyrethrins. Hope this info helps. Also since you have to use 2 ounces per gallon, its far cheaper to buy the 16 ounce bottle which costs over $100.00 at local pest supply places, if they will sell it to you a non-licensed person. ## Features - Contains the Insect Growth Regulator (S)-Hydroprene, which disrupts pests' normal growth pattern. - Labeled for use as a spot and crack-and-crevice treatment in all areas of food handling establishments. - May be applied as a general fogging agent or general surface spray. - Long-term control — 120 days. - # Breaks the endless clean-out/reinfestation cycle. # See the Gentrol IGR Concentrate label for a co ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0049EG7NM | | Best Sellers Rank | #238,423 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #628 in Insect & Pest Repellent Spray Concentrates | | Brand | Gentol Insect Growth Regulator | | Brand Name | Gentol Insect Growth Regulator | | Customer Reviews | 4.5 out of 5 stars 103 Reviews | | Item Form | Spray | | Liquid Volume | 1 Pints | | Manufacturer | self help pest control online | | Model Number | TRTD11718 | | Part Number | Wellmark | | Target Species | Insects | ## Product Details - **Brand:** Gentol Insect Growth Regulator - **Item Form:** Spray - **Liquid Volume:** 1 Pints - **Target Species:** Insects ## Images ![1 Pint Gentrol Concentrate IGR Insect Growth Regulator - Image 1](https://m.media-amazon.com/images/I/61zQ-LLVDbL.jpg) ## Questions & Answers **Q: What is the shelf life once opened?** A: Grow Me,There isn't a real way to know because the general environment can have a big impact or no impact. Obviously this depends on where you store it. The general rule is to keep it at a constant temperature, around standard room temperature, and to avoid keeping it where it will drop to freezing temps or lower. But keeping it where it gets excessively hot is not good either. So if you can keep it where it will remain in the 65-75 degree range, you should expect to get a good 4-5 years of stable shelf life. That being said, its always best to buy amounts that you expect to use up in 3 years or less to avoid waste in case it does go bad.Cheers,JonathanCustomer CareU-Spray Bugspray **Q: Can this be used in drains and garbage disposals? Have a bad infestation of gnats and fruit flys** A: No, get some foam fresh, bio drain cleaner pour in the drain at night every night until the drain flies and gnats stop coming **Q: do I have to be licensened to buy Gentrol IRG ?** A: No you do not need to be licenesed to use this product. **Q: found a German roach on a mouse sticky trap in our storage unit. what cocktail should i mix with this for adult contact kills too? using tank sprayer** A: go with suspend or temprid . ## Customer Reviews ### ⭐⭐⭐⭐⭐ Effective on roaches *by L***E on November 17, 2025* great to tank mix with temprid for excellent roach control ### ⭐⭐⭐⭐⭐ Works on most pests and bed bugs* (read entire review) *by S***D on October 20, 2012* I knew this product would work because it was recommended by the local pest and weed store which has been in business for over 30 years. But because some pests like Bed Bugs become resistant to pesticides, you have to use 2 ounces per gallon of diluted pesticide according to a newly released study. The label does does not have this new info. Even using 2 ounces with Suspend SC pesticide, I have a few "stray" bed bugs left. Did additional research and found out that adding a "kicker" such as MGK Exponent to pesticide solution makes the pesticide and IGR work more effectively. (Bayer Pesticide and MGK websites along with other sites) MGK Exponent actually short ciruits the bug's imune system, even on resistant pests, allowing the pesticide and growth inhibitor to work. I have also ordered MGK Evergreen (organic) 1% Pyrethrin Dust Insecticide and a duster bulb. A co-worker said after having her apartment was treated twice by professional exterminators, she had a few "stray" beg bugs left. And after using the Evergreen, it killed the remaining beg bugs. Apparently the organic Pyretrhin works on pests that are resistant to synthetic Pyrethrins. Hope this info helps. Also since you have to use 2 ounces per gallon, its far cheaper to buy the 16 ounce bottle which costs over $100.00 at local pest supply places, if they will sell it to you a non-licensed person. ### ⭐⭐⭐⭐⭐ Costly Exterminator *by C***K on May 25, 2024* Hopefully this will eradicate drain flies. Have not used as there are no instructions for a direct dump into the sink drains. Also, no warning about potential damage to plumbing, drain fixtures or garbage disposals. At this point, I am willing to “wing it” on application. The little bugs are invasive and I have tried many other products. ## Frequently Bought Together - 1 Pint Gentrol Concentrate IGR Insect Growth Regulator - MGK Crossfire® Bed Bug Concentrate | Kills Pyrethroid-Resistant Bed Bug Strains | 13 oz | Non-Staining --- ## 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/2225109-1-pint-gentrol-concentrate-igr-insect-growth-regulator](https://www.desertcart.co.uk/products/2225109-1-pint-gentrol-concentrate-igr-insect-growth-regulator) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-15*