I had a home consultant of the Watkins Co. and also found the product for sale at Menard's. Watkins has a single kiosk display of some of their products here where I live in Iowa. I'd think that all their products can be obtained from an online source.
I'm not using it anymore because the prescriptions are effective but I'm confident that it would still work against the burning. Sometimes I sprayed it two or three times, letting it dry between. That burning sensation is awful, isn't it?

My wife orders it from Amazon, and yeah, it still works when I'm having a really hard evening, that's when it's usually at it's worst. It definitely helps calm down the pain, but it's only temporary.
I'll take anything I can get.