Again don't compost these burn them if you can. Botanical insecticides include rotenone and pyrethrum. Although these insecticides are derived from plants, they are not necessarily safe. In a well-managed garden, these should be used only when other methods have failed. They kill both beneficial as well as pest insects.
Pyrethrum is a nerve poison and paralyzes insects on contact.
Nicotine, another botanical insecticide, is best not use it is very highly toxic to mammals. Organic sprays and dusts include insecticidal soap and diatomaceous earth. Both are effective against soft-bodied insects such as aphids, spider mites, and some caterpillars. Insecticidal soaps penetrate insect membranes, causing paralysis and starvation. Diatomaceous earth is a dust composed of the fossilized skeletons of microscopic sea organisms.