Keep your child safely inside with the Secure Mount Deadbolt Lock by Safety 1st. This easy to install lock requires no adhesives or drilling and leaves no marring on the door after removal. The simple installation takes just 3-steps, making it easy for parents to prevent children from opening doors with deadbolt locks. Simple 3-step install Helps keep child from opening deadbolt lock No adhesives or drilling required Installs behind the existing deadbolt hardware Non-marring design is easily removed when no longer needed No permanent damage to the door Dual-action system is intuitive for parents, not for children Quick glance at clear panel confirms door is locked High impact plastic construction for a long lasting, durable product