I clean the lint trap after every dryer cycle because my dad drilled it into me as a teenager — “fire hazard, always check it” — and I had been throwing away fistfuls of the stuff for two decades before my camping buddy showed me what he does with it.

Dryer lint is mostly cotton and synthetic fibers — highly flammable, highly absorbent, and completely free. Here are the uses that actually work.

Fire Starter That Actually Works

This is the one everyone knows and it is the most useful. Stuff lint into empty toilet paper rolls or cardboard egg cartons, optionally drizzle with a little candle wax, and you have fire starters that catch a spark instantly and burn for 3-5 minutes.

I make a batch of these every fall before camping season. They weigh nothing, they are waterproof if you use wax, and one roll costs nothing compared to $8 for a box of commercial fire starters.

Soak Up Spills in the Garage

Dryer lint is surprisingly absorbent. For oil and chemical spills in the garage, lint is better than paper towels because the fibers are loose and wick liquid up fast. Keep a zip-top bag of clean lint on your garage shelf.

Do not use lint from loads that had synthetic fabrics if you plan to burn it afterward — burning polyester and nylon releases toxic fumes. But for absorption only, any lint works.

Pet Bedding Stuffing

Small pets like hamsters, gerbils, and guinea pigs need bedding. Clean, unscented dryer lint (from loads without fabric softener) makes soft, warm bedding. It holds heat well because of all the trapped air between fibers.

Change it out every few days like you would with store-bought bedding. It is not a permanent solution — lint compresses over time — but it stretches your supply of actual bedding between changes.

Protect Delicate Items When Packing

Moving or shipping fragile items? Layer clean lint between plates, around glassware, and inside hollow items. It is lighter than newspaper and cushions better because the fibers compress instead of shifting out of place.

I packed my grandmother’s teacups this way during my last move. All eight arrived intact.

One Warning

Lint from loads with fabric softener or dryer sheets has chemical residue. Do not use it for pet bedding or compost. Keep a separate bag of “clean” lint (no softeners) for those uses.