I actually think this works ! We travelled for 18hrs with 2 x cats, I sprayed this in their cages and they actually settled down after the initial scrabble into the cages. I have now sprayed it in the new home and they have settled in well, rolling around and rubbing their faces on the carpets etc…
It does smell a bit but it is fine, just a little bit of a strange smell but if my cats like it I don’t mind.
I wasn’t convinced anything would make this journey easy but I do believe this helped.