I get them on one of my outdoor trees every year....just one tree they like and it's about 7 feet high. If I'm not out there once a week (as often as directions say I can) spraying and fighting them off I have seen them eat and destroy EVERY leaf on that tree within a month. The most destructive little bastards I have ever seen. And the little fuckers come back EVERY year. 5 years in a row. But no, I'm not bitter.

I live in fear for my indoor grow but haven't seen them yet...knock on wood.