In between uses I rinse it in clean water and a little soap that has lemon or citrus added to it. Can also use pine sol (small cap full). Then to clean before packing away, I soak it in the bathtub in warm water and pine sol for a few hours rinsing it and ringing it to work the bad smells out. Then hang it to dry VERY well (usually 3 days). If you can, you can also just hang it in your closet once dry and not try to seal it up which keeps any smell and moisture in.