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Discontinue use if you experience difficulty breathing or overheat.
Do not touch the inner or outer breathing surface area's of the Ka-chu. Wash your hands if accidentally you touch them.
Do not reverse sides unless the Ka-Chu has been washed first.
Follow the Stowage Proceedure even if you use a ziplock bag or other type pouch for stowage.
Keep a spare with you in case the Ka-Chu becomes soiled or unsafe to use.
The Ka-Chu should NOT be worn by children younger than two, people who have trouble breathing, or people who require assistance removing it.
Do not lay the Ka-Chu on a surface which may be touched by others.
A wet Ka-chu can still block your coughs and sneezes, but not incoming germs migrating through it. It can become more difficult to breathe through until it dries.