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TheBoneLock™ is the premier alternative pet door solution.

Hang TheBoneLock™ from your doorknob, and when you need it, just flip it up to your chosen QuickSET width and go!


Solve your pet problems with TheBoneLock™!

- No Drilling. No Screws.

- No Cutting Your Doors.

- No Steel Parts To Catch Your Clothes.

- No Damaging Sticky Door Installs or Flimsy Latches!

A simple installation and no tools required, TheBoneLock™ is portable and has everything you need to control your pets' movement.


Keep your pets out of your online meeting & your kitty off the keyboard!

Allow only fresh temperate airflow.

Keep your pets out of spare bedrooms, bathrooms, and home office without sacrificing your comfort or damaging your expensive HVAC by preventing airflow back to the system.

Have customers reported additional uses and benefits that come with TheBoneLock™?

Serious Fun: We never thought about it, but a couple of our customers have told us how they love that TheBoneLock is so portable and easy to use because they take it on trips and use it when staying with friends & family. They use it on Quickset 1 or 2 to keep fresh air flowing while maintaining their privacy and keeping out the house pets. Very cool! Literally.  ~ Thanks Michael, & Camilla!

Of course, keeping your interior doors cracked allows airflow, but we didn’t realize it also helps balance temperatures, reduces energy cost, improves air quality, and can improve the life of your HVAC by up to 50%.

No, seriously, closing interior doors have a serious impact on your expensive HVAC system. It creates a vacuum that is hard on the motor and also causes it to pull in air from the outside, attic, and crawl spaces leading to unconditioned air and increased dust, mold, and mildew in your home.

Ever wonder why your closed spare bedroom is hot and smells like a cardboard box? Well, now you do. We learned this from different customers who are homeowners and contractors that build homes, install and repair HVAC, and do electrical work. We’re not joking, do a web search on closing interior doors and HVAC. We did, and they’re right! ~ Thanks, Nathan, Dyllon, James, & Richie!

Needy pets with separation issues can seriously disturb “romance” time. Evidently, TheBoneLock can allow your pet to feel close enough to stay calm without entering the room and being a real bummer. We’re not sure it works with them all, but it evidently works for one couple who owns TheBoneLock. ~ Thanks Shane & Kayleigh!

One customer works in his office and is always on the phone. His coworkers get tired of being disturbed by his noise, but when he closes the door he’s either sweating or freezing depending if the heat or A/C is on. He uses TheBoneLock to easily keep his door cracked for balanced temperatures but block enough of the noise to keep his coworkers happy.  ~ Thanks Devin!

One couple told us they use TheBoneLock for relaxation time on their screened-in back porch. It keeps the dog inside with their older kids and they can still hear if they’re needed. This gives them peace of mind and lets them have a much-needed evening staycation. Thanks Daniel & Jennifer!

This one came from us, Eric & Angie Dutton. We didn’t realize it until we had the need. We took care of my wife’s father for 2 years after a severe series of strokes left him dependent with severe cognitive and physical impairments. We used TheBoneLock to keep him in comfortable temperatures and to not disturb him sleeping, while still being able to enjoy the TV, each other, and hear him if he needed us. It really made our lives better, and we have customers who have used it for similar reasons with young children and dependent loved ones.

Another customer loves TheBoneLock because she likes to take hot showers and her 150-pound Anatolian Shepherd doesn’t understand that she leaves the door open to let the steam out, NOT to let him in the shower with her. Needless to say, her showers have gotten a lot more enjoyable with TheBoneLock. ~Thanks Bridgett!

FAQ About TheBoneLock™

TheBoneLock is a solid all-in-one device that extends the natural function of your doorknob and frame with the many added benefits of allowing you to firmly hold any residential-style door cracked open at an adjustable distance.

At doorknob height, the familiar motion makes effortless use of TheBoneLock from either side of the door to allow convenient access to the secured room to easily control your indoor pet traffic and give your cat a safe place for its food and litter, manage noise and privacy, or endless other reasons, all while maintaining balanced temperatures and fresh airflow throughout your home. 

TheBoneLock™ is the premier all-in-one solution with 6 QuickSET positions for all your needs.

TheBoneLock™ is the only adjustable all-in-one solution to conveniently hold your door in a cracked position with the width of opening you choose for your specific need. It’s conveniently achieved with our patent pending design and 6 QuickSET positions.

Using one of TheBoneLock’s 6 QuickSET positions, just flip it up to your prefered width and go! It’s that easy!

Most likely, yes. Cats are like water because, unlike dogs and humans, they have free-floating clavicle bones (collarbone), which allows them to pass their bodies through any space into which they can fit their heads. With the adjustability of TheBoneLock if you set the opening just wide enough for your cat to squeeze through, most likely, the dog will not fit.

Although, if your dog is smaller than your cat (measured primarily by head size), then TheBoneLock™ probably won’t stop it. We’re sorry. But, there are so many benefits to

TheBoneLock™ that if you have a door or may encounter one on your travels, think twice before deciding to pick one up or give one as a gift. It’ll cost you less than a meal, and if you use it normally, you should have it forever. That’s a pretty sweet deal if you ask me.

Yes! TheBoneLock™ is made of strong, rigid, industrial ABS and a stainless steel ball chain. TheBoneLock™ was extensively tested for 5+ years on many doors, many homes, and many pets. Large breeds such as Great Pyrenees, Labs, Pit Bulls, Anatolian Shepherds, German Shepherds, and many more, it has worked well with them all. However, TheBoneLock™ is not a permanent installation and is not a safety device.

That’s why you should NEVER use TheBoneLock™ to contain aggressive animals and you should NOT use it to separate children from animals for protection, or ANY time safety is a concern.

Yes! Depending on their age, development, and height they should be able to use TheBoneLock™. Although it is rigid and takes some force to unlock, if they can reach it they shouldn’t need an adult’s help for convenient everyday use like going in and out of their bedrooms. 

Parents and pet owners can enjoy a simpler and more convenient alternative with TheBoneLock™.

NO MORE pet gates, annoying DIY contraptions, permanently damaging pet doors, or expensive litter box furniture.

That depends on your needs. TheBoneLock is specifically designed to make easy work of almost any situation. With 6 Quickset positions you can choose to allow or block as needed, with approximately 1.5 to 5 inches of opening.

Quickset 6:TheUniversal: (approx. 5 in) - The most airflow and allows hefty cats, while still preventing larger dogs and crawling babies. Also called TheUniversal Quickset because if your door has a knob and a latch, it should work. Just flip over TheBoneLock to the logo side against the door edge and use.

Quickset 4:(approx. 3.5 in) - The favorite position for allowing average sized house cats while preventing even small dogs.

Quickset 1:(approx. 1.5 in) - Allow only fresh temperate airflow. Keep your pets out of spare bedrooms, bathrooms, and home office without sacrificing your comfort or damaging your expensive HVAC by preventing airflow back to the system.

Quicksets 2, 3 & 5: We know not all pets are the same size. Kittens, puppies, ferrets… whatever your needs, TheBoneLock goes the extra mile by providing multiple Quicksets to meet them at regular intervals.

Any interior or exterior door will work. However, the most popular places for the cat’s litter box tend to be bathrooms, laundry rooms, and spare bedrooms. It doesn’t matter which way the door swings. Just throw it on and choose your Quickset position. 

Although TheBoneLock™ does work well with crawling babies and pets, always remember when it comes to child and pet safety, a product should never be used to replace adult supervision.

Similarly, TheBoneLock™ is intended to improve quality of life for pet owners and should never be used when safety is a concern, especially with children or aggressive pets.

TheBoneLock™ comes pre-adjusted for most doors, just throw the loop ball chain over the doorknob, swing it up over the latch on the edge of the door, and let it snap into place in the strike plate on the door frame.

It’s that simple.

But we made an installation video and guide just in case you need to adjust it for your door. Once it’s adjusted, though, TheBoneLock™ will work flawlessly. Click here to view our installation guide.

DISCLAIMER: Please remember, TheBoneLock is a convenience device to improve your quality of life. TheBoneLock is not a safety device for children or animals and should never be used when safety is a concern.