The cat ... It's back. Help me get rid of it.

[millimat]

So GPs were very happy to be out in their hutch today and some time in the run too. I kept my eye on them, but the horrible cat was obviously lurking and I caught it staring at the poor things in their hutch.
If I could have I'd have got the horse pipe on it but it was too quick. I've tried leaving orange scents and half filled pop bottles but they haven't deterred it.
What can I do?

Keep a couple of filled water pistols in the garden so you can grab and shoot squirt.

It may be enough to scare it away but they can be fearless determined so and so