Dry it out like it owes you money

The real trick to a wooden lunch box that doesn’t grow mold is drying it completely — the cleaning is the easy part.

Wash it with mild dish soap and warm water right after you eat. Don’t let it soak in the sink, and never put it in the dishwasher — heat and water will warp the wood and crack the seams. Scrub, rinse, and you’re most of the way there.

If you want to actually sanitize, a quick spray of white vinegar works great against mold and is gentle on the wood. Or use the restaurant-standard: about a tablespoon of bleach per gallon of water, wiped on, left for a minute, then rinsed off thoroughly. Vinegar’s the easier choice for everyday use.

Then the step everyone skips: towel it dry and leave it open on the counter for a few hours. Mold needs moisture to live, and a damp box sealed in a lunch bag is a petri dish. While you’re at it, rub in food-safe mineral oil or beeswax once a month — it seals the pores so water never soaks in deep.

Dry it completely and you’ll never be scraping green fuzz out of the corners again.