Like bobad I have loose heaps. My waste gets mixed with grass cuttings, of which I have an abundance. I might turn the heaps and mix them together once in a while if I have time. I have to be careful as grass snakes and toads both lurk in my compost heaps. I love them both, and the grass snakes love the toads, but the toads don't love the grass snakes. I have reason to believe that the toads love me but that the snakes are indifferent. I find that a thin layer of grass cuttings covering the heaps helps to prevent the outsides from drying out too much and failing to rot down. I collect fallen leaves in big bagfuls all through the autumn and mix them 50:50 with fresh grass clippings in loose heaps. This way I get leafmould the next spring instead of waiting for years as the books say. I think that compost activators are a total waste of money. By far the best way to activate compost, if you really think it needs it, is to pee on your heaps. The great pioneering organic gardener, Lawrence Hills, had buckets hung around his gardens for the very purpose of collecting what he politely called his Liquid Household Activator.