On no ... the daring escape artist. I can't tell you the number of posts on Lost Pet Facebook pages that mention the pet slipping out the door. Once they are out, they love the big world before them. Raiden, who was an all outdoor bengal for the first six years of his life, REQUIRES some outdoor interaction. The cat enclosure helps as do the two walks a day, but he will still try to sneak between our legs as we go out. I do my best to make sure he's away from the door, but that boy is fast. He's also not the most intelligent bengal as he gets out there and just walks and will stop and sniff where I can grab him.
A collor with your information on it would help, as long as the pet is able to be caught by someone to read it. Same with a microchip. Someone finding TangTang or Oberon would have to know to take them to the vet to be checked. With all the stray cats I've found, it took me 20 years to realize that fact. Pet trackers are popular now but I don't know what cat likes wearing something like that all the time just in case they get out.
When we go grocery shopping and have to have a wide open door to bring the bags in, I put Raiden in our bedroom and he stays there until all the bags are in. When a package is delivered and I have to go out and get it, Raiden is always at the door when I return and all I can do is to try and scare him back so I can get in.
Isn't this fun? No! And is it terrifying when the cat gets out and you're not sure you can get catch the cat? Yes. I've had Raiden escape at 3 a.m. when I went looking for my DSH that is outside most of the time. I had to come back in and put on shoes and wake up the hubby and grab a flashlight and hope Raiden didn't get too far. Thankfully, he was sniffing the bushes next door. At least with his walks throughout our neighborhood, he knows how to find his way back home, but now we have a cat from down the street that likes to follow us -- and I don't need a fight on my hands. This morning I had two of my cats and that one howling and growling at each other.
To get back to your topic -- all you can do is stay vigilant. The fact that TangTang has gotten out three times so far means you're not completely focused on how badly this little guy wants to be out.
Here is an interesting article with some suggestions:
https://www.adoptapet.com/blog/how-to-k ... -cat-safe/I do recall seeing a picture of wire vestibule that someone built just inside their door that allowed a person go to into it and close the vestibule door and then be able to leave through the exterior door with the cat two doors away. I haven't been able to find that picture and it would be a huge project to do -- and probably expensive. They might benefit from an enclosure -- so much information and pictures are online and they can be inexpensive or elaborate. I know Raiden and Long Legs love theirs (when the weather isn't 90 degrees). It's a safe refuge that allows them to enjoy the outdoors and fresh air.