Antfarms are awesome, you must be doing something wrong, or have a really cheap one. I love them. As Jon Stewart would say: "Have you ever seen an antfarm on weeeed?"
I'm thinking they didn't farm because they were injured...perhaps they tore their anterior crucial ligament.
I w-ant to tell you guys something. Ants c-ant farm for ****. Ants favorite song? Ch-ant-illy Lace. Uhm....too drunk.