I have just invested in 'a proper compost bin' that suits my tiny garden. In effect it is in three sections, one on top of the other. The first chamber is where 'stuff' starts to break down. Then this is allowed to fall through, again being aerated for a second time and now to be joined by worms seeking a meal. Finally it falls through to the lower section as mulch or later as compost. Meanwhile above there is a continual process going on. It is good to be able to make compost using this 'hot system' on a small scale.