I Love To Fish But I Think it is very frustrating!!

I went fishing on 6/20/08 at squirrel lake park and I caught nothing! I was fishing for catfish and I was using gulp chicken blood . Let me tell you something do not ever use gulp for catfish it is horrible!! But while I was fishing somebody there told me that crickets were great bait for catfish, but I dont know were to find them. So can you do me a favore and send me a comment or a email telling me were you can get crickets at.