My buddy Millet says he blasts mites & aphids w/ his water hose. Outside, that works better than spraying w/ dishsoap & hot water! I do it. So I guess my water & dishsoap are pesticides (?)
My GF lifted a board in her garden & there was a bunch of slugs under it. She sprinkled a little salt on them & they dissintegrated! Also, mix isopropyl alcohol w/ water & spray them in their eye & they melt. Sounds like fun things to do after a rain!!