[quote author=tuberider link=topic=4194.msg50356#msg50356 date=1217297060]
I live with them, like Rich said, they're just an eyesore.
If you want to cut down the population, run a siphon hose with a filter sock on the end into your sump, and suck 'em up.
[/quote]
Heh. I just hit post on a message asking if I should just siphon them and not risk the stress of a flatworm exit treatment, then I got a warning saying you'd posted in the meantime.
I think that's what I'll do. I'm all for avoiding pesticides in my tank whenever possible.