Hunger games rules for crickets

We feed our frogs in a clear box. We have a rule now that the last cricket alive in the feeding box earns their unconditional freedom. We don't put them back, they get released into the garden. Same rule applies for any that manage to escape. When we feed the frogs the kids say "May the odds be ever in your favor" as we toss a couple in and cheer while the two frogs ToTo and Michael hunt each one of them down. Anyone else have these kind of rules or are we just really messed up frog owners?