Help keep your little explorer safe with the Multi-Purpose Appliance Lock by the experts at Safety 1st. It's ideal for the freezer, refrigerator, microwave, and dishwasher. This strap attaches easily to your appliance and helps keep children from opening them. In side by side comparisons with leading competitors using real life toddlers, the Safety 1st Multi-Purpose Appliance Lock was strong enough to keep even the cleverest of toddlers out. Even in lab testing using state of the art mechanical pull force equipment, Safety 1st outperformed the competition. Toddler Tested. Proven Stronger. NOTE: not for use on oven doors.