The Amazon reviews on Gear-Aid Revive X aren't very good, only 3 stars out of 5. Some say that you HAVE to wash everything in Gear-Aid's detergent before treating or it won't stick. Household detergents won't work. I've never used it so I can't comment myself.
I've used Camp Dry for years with so-so results at best. I was hoping the Gear-Aid would be better until I read the reviews.