Home › Home & Kitchen › Kitchen & Dining › Kitchen Utensils & Gadgets › Can Openers How to Clean a Can Opener Published: July 8, 2026 · Updated: July 8, 2026
Photo: karenblakeman CC0 1.0 Source
Wash a manual can opener right after use — before food dries on the cutting wheel — with hot soapy water and an old toothbrush worked around the gear and blade, then dry it fully so it doesn't rust. Stuck-on gunk or light rust comes off with a vinegar soak and a scrub.
Recommended Brush the wheel and gear clean with hot soapy water after use, dry it completely, and soak stubborn gunk or rust in vinegar — A can opener's cutting wheel and gear trap food that dries into a hard, sometimes moldy crust, and because they get wet they rust — so cleaning is about scrubbing the mechanism and drying it. After each use, run it under hot water and work an old toothbrush around the blade, the gear teeth, and the pivot to lift trapped food, with a drop of dish soap; a manual opener that comes apart or has a detachable cutting head cleans far more thoroughly. Dry it completely, since moisture left on the steel causes the rust that then flakes onto your food. For built-up gunk or light rust, soak the business end in white vinegar for a while and then scrub — heavier rust usually means it's time to replace a cheap opener. Some plastic-handled openers are dishwasher-safe, but a quick brush-and-dry is faster and keeps the wheel turning smoothly, and a drop of food-safe oil on the gear helps.
