Caterpillars are becoming a pain (Oleander Hawkmoth)

I like to encourage wild life but these caterpillars are from the Oleander Hawkmoth they are destroying plants in the garden, they will strip a plant bare in a matter of hours. Iv’e never seen the moth they grow into but one thing for sure they are a real pain.

I pick them off the plants before they do too much damage they seem to like one particular variety, I give them to the fish as a treat they love them.