Single-use pre-measured powder Easy-pour pouch is perfect for narrow openings of suction canisters Snip with scissors and pour in Red Z contains chlorine to deodorize and control odor Red Z is shelf-stable and does not require an expiration date. For the product to remain shelf-stable it must be kept in a cool dry place and in the original packaging. If contents are hard or compact simply shake the product to loosen before use.