Stalwart Garage Parking Aid - 16-inch Garage Car Stop Indicator 2-Pack - Easy Peel and Stick Parking Stopper - Car Accessories

These work great. I've used them in every home I've owned to avoid wall damage. It only takes one slip to leave an expensive-to-repair dent or hole in you drywall. The old tennis ball on a string works well but these are a positive stop that will prevent any possibility of damage. They are easy enough to install. Just park where you want and slide these in front of the front tires. The double-sided tape sticks to concrete very well as long as it's relatively clean (broom clean will do). The good news is that you can pull them up if you need to move and want the garage clean, although they won't re-stick in your new place. They are also durable when you consider that they get bumped into daily. And the reflectors mean they are easy to see, so not a real tripping hazard. Overall one of the best ways to be sure your vehicle is parked just where you want it.

We put these on our garage floor for our new teen driver. They have definitely helped her know where to park in the garage and have prevented her from pulling in too far. They stick to the garage floor well and have not come up at all.

Put them in front of our garage, for wife’s car and mine! Strong durable plastic! Sticky doesn’t work too good, but I got cement glue and applied that to the bottom and stuck them to our drive way! Still look good.

Works great!!! Easy to install and worth the money!!

Adheres well to concrete floor. Plastic started breaking off of one of them after several months. Not very durable in my hands. Small pickup truck.

Works fine. Smooth transaction

Easy to stick to the garage floor and has held up pretty well! Would buy again!

Works great for parking cars in our garage. Easy install