You can prevent your little nugget from opening sliding doors with this sliding door lock You mount the lock with the included double-sided tape and you can easily remove the lock if needed. With the sliding door lock, you not only prevent your child from having accidents at home - you also take responsibility for the world your child grows up in, as the packaging is 100% biodegradable and Cradle to Cradle certified. This means that it will break down naturally when you dispose of it, leaving no traces that could harm our planet.