I have to start over in the spring, but that's totally my own fault. I fell prey to the "if a little is good a lot must be better" trap and my litter is way too deep for this time of year - well over 14". <sigh> I still have no odor problems or any other problems with it, but I know now that because mine is so deep with pine shavings it won't decompose like it should on the bottom layer. It stays dry and dusty despite light spray of water on occasion. Live and learn.
I'll still never go back to any other way, but I will curb my enthusiasm in the future and make it a complete working system, not just a way to cover the floor. And I will continue add things like kitchen scraps, leaves, garden refuse, and grass clippings, but I won't use nearly as many bags of pine shavings as I did. Seemed I was adding them all the time, and for no good reason other than fussing over a system that, if done properly, should have taken care of itself.
My good friend Bee and others on this forum with much more experience that I have tried to guide me, but I just went on my merry way trying to put new meaning in the term "DEEP litter." It doesn't have to be feet deep to be effective. <sigh>