Walmart has the Rain-X Plastic Water Repellent Spray Bottle – 12 fl. oz. in $3.35 with FREE shipping.
Product Features:
- Improve visibility.
- Just spray wherever and wipe off with a clean cloth.
- Superior water beading coating on various plastics.
- Great for use on motorcycle windscreens, goggles, visors, boat windshields, and more.