canadian tires canned rust check

I was in there the other day doing some shopping and i came across Big cans of rust check that says it will not harm the paint, Has anyone used this before?

Now i knwo u guys will say get it done right but i dont have the Dollers and just want some chance of it not rusting more.

That is advertised as being the same stuff as what they use at the rust check shops. It is alright fo paint, I have used it before on my old winter beater. No paint damage and no rust either.

yah apparantly its the same shizzle. just buy a few cans and spray it yourself. i saw a news thing on tv about it.

get the rubberized rockerguard.

im going to for under the car.