I’m not sure I ever used these but they’ve been cleaned PATENTED "HUG" DESIGN - Round silicone sleeves stretch to fit common fruit and vegetable halves large, medium and small. No more breakable parts and pieces, missing container lids, zip top bags, foil or plastic wrap! • REDUCES FOOD WASTE - Variety of sizes allows for a perfect air tight seal to slow browning and keep food fresher longer. Seal in onion, tomato, cucumber, apple, lemon, cheese, zucchini, and banana to keep them fresh • SMARTER STORAGE - Dishwasher safe, reusable, uses less refrigerator space, eliminates single use plastic, and is a great foodie or housewarming gift for eco-friendly people who love kitchen gadgets, guacamole and cooking and zero waste • PREMIUM SILICONE - Durable, thick, sturdy, and rip resistant, our 100% Food Safe Silicone is BPA free, phthalate free, made to last and easy to wash