I bought a can just to see what the deal was. For 25 bucks i figured it would be neat to try. I did my work boots first just to see the effect without spraying it on something I care about. Basically it works as advertised but there are a few things that you need to know. It leaves a frosted colour film. So that rules out spraying anything that you need to see through, and anything that you concerned about a colour change (it turned my boots blueish, as they started out brown.) It wears off over time, the spray (1 coat) on my boots lasted about 2 weeks. It breaks down in UV light, as most paint will, and it does not make a waterproof barrier. It just causes liquid to bead off. if you submerge something coated, water will still get in. Overall I still think it serves a purpose, any liquid beads off right away, I just haven't thought of any obvious automotive applications yet. It comes as a 2 stage system. 2 aerosol cans that will do about 10 sq ft. So for 25 bucks you don't exactly get enough to coat much. I still think it is a cool product though and I hope Rust-o-leum puts some more R&D into it and makes a clear version.