Warm Tipe on the Safety Toilet Lock: <br> Make sure the sticking surface is clean and dry before installing the lock<br> Stick and hold the units for a few seconds when you install the toilet safety locks<br> Better to wait 24 hours to use the locks after installing<br> If you want to remove the toilet locks, you can heat them with a hair dryer for about one minute; which would be easier<br> It may easily for an adult to open the child lock, however, the toddler safety lock is hard for children under 2yrs to unlock<br> Better not to use the safety lock in front of children to avoid him from learning and unlocking the child lock successfully<br> Fit for flattish flush toilet, not for potty training toilet<br> The gap between the tank and swing arm should be 1mm when installing the toilet lock, otherwise, the lock would fail to use and work as intended<br>