How to use: clean the surface where you want to put the safe o lock with an ordinary home cleaning solution. Wipe it dry, peel the paper backing of the tape and put it in place (see installation instructions in images) press the safe o lock for minute and leave it for 4 hours before you operate, for operating instructions see the images and to remove: remove safe o lock carefully from both the side. Do not use any chemicals and sharp tools. Clean the surface with wet cloth, etc. As suitable. Use new set of double sided tapes to reuse. Product features: very high quality polymer used for a sturdy design, sleek wedge shaped design, very easy to install with no tools required (no screws and no drilling) reusable, high quality velcro used for sturdy operation. Kids find it difficult to operate but adults have no hassles precaution and tips: this product is not a toy, and not a substitute for adult supervision, if possible, for better utility, install the product at such a height that child cannot easily reach, do not try to force open the doors and windows when lock is installed and is in engaged position as it might damage the product (although light force from child will not damage this) before sticking the lock on surface, make sure window is in completely closed and position of lock is as desired. Taking it off after sticking once might damage the adhesive and decrease the protection. Order new tapes if adhesive is damaged before using it Consult baby safety experts for right locks for your furniture and appliance, do not use on oily and heated surface. Do not use when lock and and or adhesive is damaged, you may want to discontinue the use of product after your child has reached an age where he and she can remove it alone and when disengaging keep the wedge shaped top portion safely so its not lost.