Don't put up with locks that stick. Use 3 IN ONE Lock Dry Lube to dissolve build up and lubricate lock mechanisms with a formula that won't attract dirt or create a mess. 3 IN ONE and To keep your door hinges and locks operating smoothly and quietly, regular lubrication is essential. Here's a professional tip for effective maintenance: Recommended Lubricants: For Door Hinges: Use a silicone based lubricant or How to Lubricate a Lock Angi Stuck door lock? Use graphite lube, not WD 40 Chicago Tribune How to Loosen and Lubricate Stuck Door Locks 3 IN ONE USA