Scent Killer® is an amazing, odourless breakthrough that kills human scent on contact. Simply spray it on your clothes to help prevent human odour from forming a detectable gas. It works all day. When liberally applied, it permeates your clothing for scent-killing power. Tested and proven to be 99% effective at stopping replicated human odour. The 24/24 combo includes a 24 oz field bottle and a 24 oz. refill bottle.