you NEVER apply chemicals.. organic or not.. UNTIL YOU ID THE PEST ... post a pic and get an ID.. then contemplate how to get rid of them ... guessing isnt good enough... ever ken ps: if you cant post a pic.. pluck a few into a plastic baggie.. and take it to a good nursery ....

I use a spray by Ortho that works for both insects and disease control and spray my irises, daylilies and hostas weekly. This is really working well for me.

Go to your garden center and get some BT--Bacillus thuringiensis but it's called BT insecticide. It is a bacteria that attacks only caterpillars or worms. It is completely safe for children, pets and even birds. A bird that eats a caterpillar that has ingested BT will not be harmed. The caterpillar eats the BT and it kills it from the inside out. It works better than chemicals insecticides

I’ve tried Bt with questionable results. Now am using Spinosad to try to control them. They found their way to the window boxes, and the petunias there are now showing damage. Planters on the patio looked like they were recovering but now showing some damage again on the calibrachoa. Won’t be planting petunias or geraniums again. Ever. I read something the other day that suggested that budworms are appearing earlier in the season than they used to and surviving winters further north than before. I replaced some of the geraniums with Madagascar Periwinkle and removed the golden creeping Jenny run amok in the window boxes. Won’t buy that again, too spready. Planted scaevola instead. In another container area Mandevilla (Dipladenia) looks fabulous, first time for me. New Guinea Impatiens in one planter collapsed due to botrytis. Waiting on the other two planters to see if they do the same. :o( My landscape/Hort guy said he planted several hundred NG Impatiens in mass plantings for some of his clients and they’re not doing well. Bummer.