Special locking and unlocking process: Compared to similar locks on the market, the locking and unlocking process of the adult door handle lock is much smoother and easier to operate. Its simple appearance blends seamlessly with your home decor and reduces the attention of curious babies. Easy to install: Install the door handle lock with the tape, without tools or drilling. It uses strong viscose tape, so you don't have to worry about the adhesive breaking down. Please note that the tape's effect will improve after 24 hours. The tape is easy to remove and leaves no residue on the surface, so you don't have to worry about damaging the door. Simple design and wider application: The simple design and attractive color schemes make the door handle lock suitable for a wider range of customers' homes. Suitable for most types of door handles on the market. Why it's necessary: Prevent children or pets from entering certain prohibited areas. Prevent children from playing with doors and injuring themselves. Prevent babies or pets from being locked in a room. Caution: Make sure the arm cannot be pushed up or down when the lock is in the “lock” or “unlock” positions.