A fresh S’well has never been easier thanks to our new S’well Cleaning Tablets. They clean tough stains and odors in less than 30 minutes with powerful effervescent bubbles. It’s safe and easy to use with our natural, biodegradable formula. Cleans tough stains and odors. No scrubbing needed. Safe and easy to use. Natural, biodegradable ingredients derived from plants and minerals. Chlorine & Phosphate-free. 16 tablets included.