How should I clean a cooler after storing raw meat?

Use bleach and hot water. Mix about one tablespoon of unscented bleach per gallon of hot water, scrub the interior, let it sit for five minutes, then rinse thoroughly. Don’t rely on dish soap or vinegar—soap is for grease, not killing bacteria, and vinegar doesn’t disinfect as well. Let the cooler air out in the sun if you’re worried about bleach smell, and always discard leftover ice or melted water from the meat.