Raccoons

I have an ongoing coon issue as well... I've implemented several hardware deterrents to no avail. When thwarted, time is on their side and they are bold and relentless explorers of work-arounds. It's to the point now where they've nominated the more athletic members of the tribe to climb, jump, hang with one hand while scooping and doling out food to all their fat, lazy buds on the ground below. It's a nightly feast, which they follow up by doing back-stroke and lounging in the water trough... and they sheet EVERYWHERE....

Diligent eradication seems to be the only viable option.