此梅西喷雾补充剂可用于梅西KeyGuard 和 梅西笔形喷雾，可以像打火机补充剂一样多次补充使用。

The KeyGuard units (80365 & 80366) and the Pen Defender (80344) both carry a shorter expiration date because they are designed to be refilled/refreshed after 1.5 to 2 years.  The end user may purchase a refill canister (#900097) very much like what is used to refill a butane lighter.

The Mace Pepper Spray Pen Defender is a great, covert self defense weapon and now you can use it more than once by refilling it with this handy refill cannister. Its similar to filling a butane lighter. Instructions are printed on the refiller can. You will be able to refill your pen back to full capacity for its next use.