Regularly blow air through the mouthpiece of the filter after each use, to keep it from clogging. After using the filter, use the included flushing plunger (one per filter) to push clean water through the sip straw section.
5 Pack Personal Water Filter Straw Survival Water Filtration Purifier,Emergency
LifeStraw 5 Pack Personal Water Filter - Hiking, Camping, Travel, and Survival
5 Pack Survival Water Straws 1100 Gallons Each, No Expiration, No Chemicals
5 Emergency Water Filter Straws 1800-Gal Survival Camping Hiking BPA Free 5-Pack
