Undercoating Help

Undercoating my bed soon. know this is an old subject and I do know many of the new undercoatings available but has anyone seen this brand recently. It is OLD but I have 4 20oz. cans and would like to use them up and add to it with the same if it still exists. Get this... from K-Mart about 20 years ago and all cans still good. I am not optimistic this stuff still exists or is even legal?? Any input??

 

Honestly I'd toss them. 2o years will break down chemicals more than you think, and better to be on the safe side than spray it with horrible results than you'll have twice the work trying to clean it up again. In my opinion not worth saving $30 bucks.

 

Hazmat disposal. Get some new stuff. A lot has changed in chemical structure in 20 years.

 

More curiosity than need to keep them or saving a few bucks. These things were a whopping $1.49 each back then but did a great job on my 65 Chevelle show car........still wish I had that one back. Any idea how many cans it would take to do the entire underside of a std cab bed? The bed will be off when I do this. Thanks for the input.

 

Test it on a piece of cardboard. Depending on how it drys, use it or dont. I think the four cans should be enough.