Is it my imagination?
I read the message about using Pam on the aphids, so as a trial, I sprayed it on the Japanese beetles. It either stunned them or something because they didn't like it at all. They love my malva also besides the roses so I gleefully gave them a shot not because I love the malva (it is an invasive pain), but just out of vengeance. Now I realize this could be costly, but could you do the same thing by mixing the canola oil with some soap and giving them a direct spray? By the way, they are sexual maniacs, aren't they? Thanks - Barb