My 6 month old compost is a mixture of kitchen scraps, leaves, coir, alfalfa and I recently added some worm castings. It got very hot to start with and now it has cooled down. It is alive with mites and a few worms, but the decomposing has slowed and I have a lot of knats. My compost is in a tumbler outside and I don't want to bring those stinking knats back in my house. I added Neem seed, about a cup last week and tumbled it, still have knats. Any suggestions would be appreciated. This is my first try at compost.