I know I couldn't resist the "K" thing
56 years old and a boy scout why did it take 55 years to find an easy way to store my coolers.
Having pulled coolers out of storage and opened the lid only to find that it looked like a chia pet inside with mold in various shades of gray and green everywhere I now rinse after use and pour in 1/2 cup of the cheapest liquid bleach I can find. "I use the 2 glug meathod" It seems that the bleach actually vaporizes because the cooler is cleaner than brand new even the lid and sides. Heading out I simply take it to the bathtub rinse with cool water and its ready to pack, no scrubing scraping and especially no cussing. It's a natural sanitizer so I am no longer concerned with the quality of the ice it's cheap peace of mind.