You've seen the infomercials where they spray a screen door and it floats a boat, and all their other claims. But, apparently those who have tried it on gutters and other applications report total failure. In fact, some say it may matters worse.
So! has anyone here tried Flex Seal, and if so, what is your opinion of it?
I also hear you can buy a similar product from any auto parts store for about 20% of the Flex Seal price.
Thanks in advance.