Wow :-?

I've used silicone spray for years ( not that brand) and had never had an issue.

I'm wondering if that can/batch wasn't contaminate with something or formula was off?

What's the odds two different make shoes would have that reaction.

Somebody here is a chemist ( I think) maybe they'd know.

I bet the boot mfger would be shocked to know a product made/sold for waterproofing boots could do such a thing in that short of time.