This Oppo Knoblock Handle Lock and Pet Door Stop has a simple yet very effective design that means you won't need to worry ever again about your loved pet hurting itself with the door or going outside unattended. You can use it two ways. First, when you don't want your pet to open the door to get in or out, use it like a doorknob lock. Just place the Knoblock on the end of your doorknob and then turn. Second, when you want to make a small gap enough for your pet to pass through, use it like a wedge or stopper. The door will stay open, so no more painful tails caught by closing doors or pets forced to pee indoors because they can't get out.
The Oppo Knoblock Handle Lock and Pet Door Stop features: