Lockable Cat Flap for Indoor/Outdoor Cats - White Pet Door with Security Lock | Perfect for Homes, Apartments & Multi-Pet Households

We have 2 indoor cats at home who are smart enough to knock on the doors and let you know they want in or out. At first your reaction to this is "oh look at the cute, smart, well behaved cat who follows good door knocking protocol". After a while you realize that instead of you training the cat, its the cat that has been training you.... to be their BUTLER! 20 times a day they knock on doors to get in or out, and by then you are already asking for mercy.That's when this pet door came in. Ordered it and was delivered pretty much in the expected amount of time (we live in Puerto Rico so Prime takes more time to deliver over here). The door comes in a simple cardboard box with good instructions, 4 screws, 4 plastic spacemakers (if your door is too thick or if you need to make space between the 2 sides). It also comes with a cardboard guide so you can use it to make the opening on your door.We did not use the space makers since the door we used it on is an aluminum screen door. We just marked the opening with a marker using the guide, and proceeded to use a jigsaw.PRO TIP 1: use a drill first to make a guide hole before using the jigsaw. Choose the correct saw blade depending on the material. Remember saw blades are measured by teeth count.PRO TIP 2: remember to measure twice and cut once. The instructions tell you to place the door at a height where the bottom of the door is almost touching your pet's belly. We made a mistake and mounted it a bit too low, and our cats have to bend down a little to get through. They are cats so they don't really mind the bending. Perhaps a small dog will not want to bend.PRO TIP 3: Also mark and drill the holes for the screws AFTER you make the opening. if you mess it up, there's always a bit of wiggle room with this door.PRO TIP 4: Choose the right product for the thickness of your door. Some of these doors are made for thicker or thinner doors. This one worked well for an aluminum door that is just made from a 1/8 thick panel.Mounting was fairly easy once the opening was made. We drilled 1/8 inch holes for the screws and used a cordless driver (in the lowest torque setting) to make it easy on us (since you will probably be sitting down or kneeling for this).Once the mounting was done, we had to re-train our cats to use the door. This takes a bit of persuading, because the cats wanted to keep using us as their own personal butlers. We had a long talk with them and explained that they had to open their own doors now. We had to force them (gently of course) in and out of the door a couple of times until they understood what it was for. They will paw at it for a while but will not like the magnet at first. Just motivate them with treats and after a couple of days they will be fine. Our cats started consistently using it after the first day.PROS:- Magnet works amazingly well. It shuts the door tightly so critters and other vermin cant get in.- Looks good and will cover any mistakes you make when perforating the opening once you mount it.- Easy to mount with the 4 screws provided (DONT OVERTIGHTEN)- Cats get used to it pretty quickly.- No more cat butlers in our home.- Sturdy enough. Door is made of hard plastic.- Not very costly compared to similar products.CONS:- The door does has a lock, but it is a full lock. Meaning you can't lock it for going out or in , independently. Other products do this. Sometimes you will want to let your pet come back in, and not go back out (at night for example). You wont be able to do this with this product.- Somehow... my cats learned to open the door even when its locked. So the lock doesn't work that well. It's not a deal-breaker for us.