A "natural insecticide" refers to a substance or product that is derived from plants or other natural sources and is used to kill or repel insects. Full definition
Warning: Chamomile contains natural insecticide and it is a reason of such powerful effect on the insects. (howfacecare.com)
If you're feeling like a scientist, you should check out this publication on natural insecticides from professors at Washington State University. (policygenius.com)
Natural insecticides use the natural powers of various plants the same way that natural repellents do (except instead of repelling insects, these sprays should kill them). (policygenius.com)