Hi there. I have trapped three "feral" strays in this way, in the meantime I caught my own cats many times, the neighbours cats frequently and a fox!
Don't worry too much, they settle down quite quickly when they realise they're caught good and proper, and it's easy to release the wrong captee
![smile :)](https://www.purrsinourhearts.co.uk/Smileys/purrs smilies/smile.gif)
but when you do get the white boy, throw a towel over the trap before transporting him, this will calm him and help you to present the vet with something other than a spitting hate filled nightmare.
Be sure to put a plastic sheet down in your car, as its a dead cert he will wee in the trap the moment you put it on your car seat.
![sick :sick:](https://www.purrsinourhearts.co.uk/Smileys/purrs smilies/sick.gif)