Yes, you may use Gentrol Point Source under a kitchen sink but will only treat within the consealed area underneath the sink when enclosed.
The radius is measured from the center to the edge of a circle. When finding out the area in which to use a Gentrol Point Source station, you need to figure out an area of 75 square feet. You can do that by measuring out an area of 7.5 feet by 10 feet and that's the area one station will cover.
Gentrol Point Source is not labeled for treatment of bed bugs, it is only labeled to treat roaches and pantry pests. However, we do sell the Gentrol IGR in the liquid form in all of our Bed Bug Kits and the liquid IGR is labeled for treatment of bed bugs.
Gentrol Point Source could be used under a couch if needed. It spreads up to 75 square feet so is generally placed in areas of high activity. Depending on the size of the treatment area, place 2-4 in the kitchen and 1-2 in each bathroom as these are the most common areas roaches are found.
Gentrol Point Source after the capsule has been opened, it releases microscopic particles that actually fly through the air on particles that are normally flying around. It could be considered slow release. As these particles float through the air they land on the roach causing growth abnormalities to immature roaches.
Yes, Gentrol Point Source packs can be used in cabinets where dishes are kept as long as they do not come into contact directly with dishes or any surfaces that food will come into contact with.
The Gentrol Point Source Stations when unused will have a shelf life of at least a year or so. Once activated, each station will continue to give out the growth inhibiting vapor for 3 months before each station would need to be replaced.
Each Gentrol Point Source Station treats up to 75 square feet for 90 days. Please be aware this product is an insect growth regulator which contains a juvenile growth hormone mimic that retards the growth of certain insects. Gentrol Point Source Stations will cause the roaches to become deformed. It also will prompt the females to prematurely lay their eggs (the eggs will also be affected by the product). Gentrol Point Source should never be used to eliminate a roach population by itself. Gentrol will not kill roaches...it only prevents them from reproducing. You should use roach baits like the Advion Roach Bait Gel and roach sprays like the Cyzmic CS in conjunction with the Gentrol Point Source. Please take a moment to look at our Roach Control Kits.