Secure Home by Jessa Leona's Sliding Door Locks are the only child safety door locks you'll ever want to use! You'll have complete peace of mind knowing your little one cannot get outside and wander away. Our durable locks stop the opening of sliding doors and windows so your toddler stays safely inside. Plus, if you want fresh air in your home, you can position the locks so the door or window only opens a few inches so your child cannot slip through. Our sliding door locks work well on most glass, wood, plastic, and metal surfaces so you can secure patio, storage, closet, and shower sliding doors along with sliding TV cabinet doors and windows. Besides your child, they keep your curious pets out of mischief, too! And, being a 4 pack, you can use them on several doors and windows. Just please don't use them on heavy glass patio doors. Made of strong and durable ABS plastic, our locks last a long time and once they lock down, they have a strong hold. And, our locks are very easy to install and use. Simply peel off the tape backing, apply each door lock to a clean area, then press for one minute. You'll want to place them high enough your toddler cannot reach them. Our sliding door locks are perfect for renters and military housing because they don't leave any marks behind when removed. Since we use only the highest quality materials that are BPA free, you get a 90-day money back guarantee with your sliding door locks. Our products are factory tested and we are confident you will love them. If you don't, you are backed by our no questions asked, 100% money back guarantee. Order enough sliding door locks for every door and window in your home for your peace of mind today!