We would recommend Invade Bio Foam for your situation. The foam would be ideal because it has the ability to expand and come in to contact with surfaces that the gel cannot. While Invade Bio foam already contains a foaming agent, it does require a poly foamer to make the application. And yes, we do recommend scrubbing the drain with a round brush to help remove some of the decaying organic matter as this will help speed up insect elimination. Flies often aren't just breeding in drains, but can breed in any area where food, moisture or other organic matter builds up and is undisturbed. Prime areas include peeling away baseboards, machinery cracks, beverage line bundles, beverage fountain drip trays, under ice machines and voids around dishwashers, walk-in coolers and tray conveyors. You can use the foam in most of these "hot spot" areas if necessary. We also have the Invade Hotspot available. This foam product comes ready to use and does not require any special equipment.
Invade Bio Foam can be applied to those drains as it is not harmful to septic tanks. Do not blend with bleach, acid or caustic cleaners, disinfectants or antimicrobial products.
No, Invade Bio Foam is far too thick to use in a fogging or aerosol machine such as an actisol unit. Bio Foam is made to be used in a hand, power, or hose-end foamer only. Invade Bio Zap is a formulation that can be fogged in crawl spaces. Please let us know if you have further questions or need further recommendations for your application.
Invade Bio Foam in a poly foamer.can be applied to a sump pump and you would not need to drain the well but you can. You should treat over multiple days with the foam and it will eat the "gunk" in the cracks which should eliminate the breeding locations.
Depending upon what pest you are treating for you shouldn't need to use both products. Just use one or the other. With that being said we would not recommend using both Nibor-D and Invade Bio Foam at the same time to treat your drain because different products are formulated differently and are not meant to be combined with other products.
Invade Bio Foam Concentrate is mean to be diluted with water and applied with a foamer such as the Foamer Simpson or other foaming equipment. The application areas and instructions vary depending where and what you are treating for. Please refer to the product label for more details.
Invade Bio Foam Concentrate will help get rid of the organic matter in cracks, crevices, drains, wall voids, and other areas where scum tends to build up. It will usually take a couple hours to disapate after application but will not kill the insect, only takes the breeding ground and food source away. If no visible signs of moisture are found, you may want to reach out to an inspector to help locate where the decaying matter or moisture issue is coming from.
Removing the scum and organic matter may not be enough, this is where we recommend spraying the ouside periemter and inside baseboards, cracks, crevices, under sinks, etc with a residual product. Temprid SC is a great product for indoor/outdoor control in conjuction with Delta Dust as a crack and crevice application around windows, doors, etc.
Invade Bio Foam will help to eliminate organic material buildup. To eliminate odors such as curry, you can use Bac-a-Zap or Earth Care Odor Remover Bags.