After months of rigorous trail use, your CamelBak Crux Hydration Reservoir tastes more like drinking from the backyard hose. Give your reservoir and drinking tube a proper cleaning with the CamelBak Crux Hydration Cleaning Kit. This kit includes a large reservoir brush and skinny drinking tube cleaner, both working to scrub built-up gunk from hydration mixes and hard tap water. Two tablets dissolve remaining residue after scrubbing, should your reservoir need an extra level of cleansing. Also, there's a click-in dryer that drains the reservoir after cleaning, preventing mold and mildew from growing inside a wet reservoir.