I wouldn't treat until I knew them to be harmful. Consider taking some of them to a local university or your agricultural extension. Pesticides in the house are harmful to people, too.
__________________ May the bridges I've burned light my way.
Any recommendations for an insecticide? I prefer a commercial brand rather than home made.
Malathion is my go to of choice. Deadly to insects. Won't harm mammals. And if you spray the foliage and drench the substrate, it is a one time deal. Do it outside and rinse down the runoff, if there is any concern about pets. I've never had an issue.