I swear I stood for hours with multiple traps, in multiple locations and with multiple foods. Perhaps my damsels were some sort of genius strain or something but they wouldn't come close. My daily catching and trapping attempts really began to stress everything in the tank out, not to mention me as well. For a few seconds there I was more proud of catching those two evil damsels than my 10.5 lb largemouth bass, 54 lb amberjack, et cetera.