My tree has webworms and the guy at Lowes said spraying dishwashing soap on the tree will get rid of them. Is this true? Any suggestions on insecticides?
For now they seem, or the webbing at least is only on the bark. I did try to break it apart and noticed a new wasp nest nearby so hopefully they will do the trick. I also plan on getting some beneficial nematodes to put in the soil around the base.
Don't spray bleach on any trees or plants that you care about.
The linked article is good but dated. BT is the safest but likely the highest cost. Sevin will work well and it pretty cost efficient. Malathion and acephate will work but they both stink, and the others mentioned you won't be able to find.
missed the post saying they are on the bark. If so they are bark lice as already indicated and shouldn't be treated. They will die and then a bit later the web will break down.