Greetings fellow bunny parents

So as I explore this forum I had a question that just popped into my mind. Anyway, here it goes.  Does anyone know where to get horse stall bedding or wood stove pellets? I heard that it makes a suitable litter and that it is cheap. However, I ran into a dead end when I couldn’t find any online. If anyone here uses either litter and knows a good brand, please reply to this post telling me where they sell it. I live in southern California, so I can’t go to any retailers that are in different states or are northern. I use carefresh, but it can get expensive, as someone who likes to be frugal I would love to stock up on these types of litter. So thank you for stopping by with your answers it means a lot to me.