Verdo wood pellets. 7 bags to make a decent bed, soaked to fluff them up. Skip out daily and there is literally no waste. Lift the wet once a week and top up with one bag. They are the easiest muck out ever, and are dust free
eco comfybed is the best you'll find for zero dust. plus its cheap and really easy to use. nice people to deal with as well.....just google them for a number