Review on Griot's Garage 10960 Fabric Protectant 22oz: Powerful and Long-lasting Protection for your Fabrics by Chris Brazington

Because a spray bottle is fuller than a can. I lifted the convertible top a bit and then went around the car with a roll of kitchen cellophane to "camouflage" the rest of the car from splashes by tucking it under the convertible top and over the windshield, side windows and trunk. 1 rain since and it's really good. It's too early to say if this will last.