SomeGuyInCali wrote:
I used to carry MK3 Pepper Gel but never once had to use it in the many years of service to the club.
Bad idea to use gels/foams. I once took a course in the use of OC (that's Oleoresin Capsicum) sprays. The instructor told us that prisons stopped using them because the inmates started covering their face with their hands and then flinging the gel/foam back at the officers.
From my personal experience (roughly 5 ounces dispensed over the years), liquid spray works the best. Good range, soaks into clothing, and turns into a mist on contact (so blocking with your hands just creates a misty cloud). But, don't assume it will work, even with a direct hit. Rough estimates: 85% will stop; 10% will keep coming, 5% will need a first aid and a ride to the hospital (vomitting, allergic response, etc). So, be ready to drop your spray and wrestle with someone soaked in OC, or be ready to save their life.
(Disclaimer: IANAL. I am also not a scientist, your results may vary.)