This is a recipe I pulled of one of the boards last year and used it with great success. Others have had luck with it as well. The best part - it's cheap!
One gallon jug of distilled water (or clean creek water)
16oz hydrogen peroxide
1 box of baking soda
2 shot glasses of the green Hunters Specialty liquid soap
Mix it, let it sit an hour so the reaction and release of gases doesn't blow the top off, then pour into a spray bottle. Strengthen from time to time with more peroxide since peroxide turns to water in the presence of air.
This cost about 5 bucks for 128oz versus 8 or 9 bucks for 12-16oz.
I walked freely about with leather boots on and with little regard for the wind and I heard only one snort all year (I wasn't wearing it at the time). The night I shot my archery deer they fed 10 feet under my stand without a clue. I even got a second shot at that deer. He saw me move, heard an arrow wiz past him, then circled downwind of me to try and figure out what I was. His nose was held high but he never detected me. I'll never buy expensive scent killer formulas again
Fritz