I've got a strawberry bed with about 10 plants. Last year I had a lot of aphids and had to spray regularly with neem. This year I've been inspecting the leaves frequently for them and haven't found any. However, one of the plants I noticed today is sending up some warbled curled leaves. I cannot find any aphids, though. I have been seeing the ants occasionally crawling up the stems of the plants, so I assume the nightmare must be beginning, and I've sprayed with neem to be safe, but if I can't see the aphids, I don't know how to kill them really.... Is there anything else that could be causing the leaves to curl on one plant?