Super easy, spray on squeegee off. No residual either. Wiped edges with a paper towel. One bottle was good for two cars. 2oz or so, I’ll look at my bottle. I haven’t heard back from them yet.
it is a cheap preventative, hope it’s doing something. Guess it fills in and binds microscopic pores/gaps.
Thanks NbyNW - for $50 and ease of installation, it's a winner. I will for sure give it a shot ...when and if I get my car