A LONG time ago, possibly on the other site, a thread was running on how to clean a cooler. Someone simple posted "Two words, Scrubbing Bubbles". Well, I finally bought some and tried it out. WOW! I've had grime on my cooler lid for a year that I could not get out. I've tried laundry soap, dish soap, abrasive cleaners such as Ajax and Ba Keepers Friend and none of it worked. I rinsed off the coolers with water then sprayed some Scrubbing Bubbles on them, let it sit for a few minutes in the shade and then brushed and rinsed. My shad cooler is clean enough to eat out of and all the grim on my fish cooler lid disappeared! So I started wondering what else this stuff might be good for... After a couple of fishing trips on the Red river, I get a build up of scum on my motor that, before now, would only come off with hull cleaner which is an acid. I wet the motor down and sprayed some Scrubbing Bubbles on a brush. I only let the stuff sit on the motor long enough for me to scrub and rinse because of the paint. I don't know how compatable they are with one another but a little is all it took. The stains were gone. This is good stuff, give it a try. Best of all, I just saw an coupon for $5.00 on one of those google ads that pop up below the lastest post.