I used this product for months, thinking I was secure in my home. One day, a friend came over and stated that he didn't think the product would work. He went outside and tried to shove open my door...and was inside my house in less than 5 seconds. The "security" bar had broken with a minimum of effort. You are probably better off with a chair under the door knob.

I'm surprised at all the good reviews for this product. The base of ours slides on tile, even when kicked in tight. Door will open when jiggled repeatedly. Not sure I would recommend this product.

This is a well made product and it seems to work perfectly for the purposes for which it is intended. Easily adjustable, solid yet lightweight, attractive design. Master lock brand reliability is a plus as well. Nice that it can be used in a sliding door too. We won't be so worried about shutting the patio door every time we leave the house next summer, as long as this bar is securely in place.

I bought five of these after reading other positive reviews. I add mine to those. These are light, solid, adjustable and easy to use. I have them protecting two doors and three windows, for which they work equally well. It took me about 10 minutes to install them all. They are made of aluminum so they are light a very strong. They appear to work equally well on carpet and hard floors. The rubber boot seems to grip very well. I believe it would take a lot of force to get through these. Hopefully enough for an intruder to think, "I'll go someplace else easier to get in to!" I recommend this product. Fair price, good Master Lock quality and they do what they advertise. What more can one ask for these days?

It works just fine. It was much less expensive than others I looked at, but is of good quality.