Good on a Backpack?
I sprayed a biking backpack that I wear when I ride my bike.  I often carry food and a lot of stuff in it and it always gets grimy.  I washed it once in the machine and it did o.k. but I decided to spray it all over with this spray.  It went on fine.  The family said it had a smell but I could barely detect it.  I had enough to lay on two coats with some left over.  I haven't used my backpack yet but I needed to get a review up in time so I will update it if I think it doesn't work as advertised.
Rating: 4 stars