how bug barriers (e.g. Ortho Home Defense, Raid Max Bug Barrier) kill a large variety of insects for 6+ months even afte its dry?
In: Biology
There is something that kills bugs and does remain effective for a long time. When we had carpenter ants, the bug guys sprayed diatomaceous earth where we had seen them. Diatomaceous earth (food grade anyway) isn’t toxic to humans or pets. It kills bugs by making lots of small scratches on their exoskeleton, which makes them dry out and die.
I got some and put it around, and it did a much better job than the ant baits ever did. I sprayed some around the outside perimeter of our kitchen last month, and so far NO ants. It does lose some effectiveness if it gets wet. It works as a bug barrier, and some of the commercial products use it.
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