The filter membrane in the AquaSafeStraw acts like a micro-porous sieve that filters out particles in the drinking water including micro-organisms. Therefore, while in use, the AquaSafeStraw must be kept clean.
To clean, wipe exterior only, with anti bacterial wipes. When not in use, keep cap on mouth piece to maintain its integrity.
Do not strenuously shake the AquaSafeStraw to remove water residue. This will damage the filter membrane. Before the AquaSafeStraw is stored away, it must be cleaned (as stated above)
Then once cleaned, leave the unit in upright position in a well ventilated area to completely drain and dry. it must then be stored in a cool and dry place.