We're about to start with one of these. Looks fairly vermin proof - squirrels, foxes and rats being likely contenders for open composting. I really hate wasting food but occasionally some animal fat, old bread, unusable leftovers remain, and it seems like a pointless exercise giving it to the council/contractors for disposal and composting elsewhere. The idea that pretty much all organic waste goes in is very good. Previously many months' of careful composting have gone belly up after a clumsy addition of inedible meat; rinds and fat. I've a feeling our household just consumes too much, our garden isn't large enough and shan't have the capacity to take in the mulch, and so will end up hot composting AND sending food waste away via the brown bin. Should it compost nice and quick (hopefully no more waiting 18 months) I'll be very happy, and if there's spare mulch I'm sure it'll go to a good home.