It stops insect feeding days before they die. Unfortunately, this product is not available to homeowners. Bordeaux Mix is made from copper sulfate and hydrated lime. It acts as a fungicide and an insect repellant. It is relatively nontoxic.
Boric acid is a mineral-based organic pesticide derived from the element boron.
It is a relatively nontoxic insecticide used in cockroach and ant control. Bt is derived from fermentation of Bacillus thuringiensis , a soil bacterium. One widely available strain only controls caterpillars. It is relatively nontoxic. It is relatively nontoxic.