I've heard that if they start to go crazy, you can put a slice of cucumber in your tank and that draws them to it. Then you just remove it while they're on it and throw them out. I couldn't bring myself to do that cause I'm a soft hearted sap. My shrimp has been eating them and saving me.
I wouldn't be able to do that. =[ My mom's friend told me to bring them to her if I can't handle them anymore. Her fish will eat them.