Cirkul does not offer cleaning tips for the Sip mouthpieces. The cartridges provide enough flavor to equal at least six 20-ounce beverages and are meant to be used within 10 days.

Cirkul is a flavored water system that uses "sips" to enhance flavor with no sugar or calories. Today I offer my unbiased review of the bottle, lid, and 6 "sips," one from each category. I also ...