My kittens grow up. They love chasing each other. The original cat tree is not enough. So I went to Ikea to find some items can make a cat trail.
Step 1: ENUDDEN From IKEA
Step 4: Drill and Silicon
The works fixed to the wall with a drill and silicon will be secure. However, my cat has interfered with my work. I can not take pictures, so I put a picture of him lying on the drill box.
If you look at this picture, you can see a door knob has been lost. Because they are so energetic that damage furniture.