Supply them an itty bitty portapotty and some toilet paper along with a little sign to clean up their mess. I suspect it's some sort of caterpillar. They tend to leave caterpillar poop and never clean up after themselves. They're very difficult to housebreak.

Ok thanks. I saw one of these nymphs on my elephant ear (which is just starting out) and I caught him easily and threw him over the fence. I was super mad...I wonder if there will come a time when I will kill them...not sure but he was easily caught. I see them from time to time but there doesn't seem to be too many. They camouflage well though.

I expect that you are just overlooking the caterpillar.

Little green worms that are probably on the underside of your rose leaves munching...(size varies from tiny up to a inch long)... Sawfly larvae are called Rose Slugs....Least toxic spray would be safer insecticide soap or similar... Spinosad is very effective just be careful and follow directions as it can kill bees... Some people pick them off there rose leaves and squish... Our curled rose slug here are mostly found on top of the leaf... But usually other types are found UNDERNEATH the leaf... Here's what our more mature rose slugs look like: The wasp eats them so he is a good guy in my book....lol