Why we built this
Our cat Mochi hid under the bed for two days after every appointment.
The drive there was screaming — the full twenty minutes. The waiting room was worse. And coming home she smelled like the clinic, so her housemate hissed at her and they fought.
We tried what everyone tries. Different carriers. Calming sprays. A towel over the crate. Some of it helped a little. None of it solved anything.
So we stopped asking what was easy to change and started asking what was actually causing it.