Does anyone have any tips for a home-made cat repellant

[binley100]

I wonder how hard it would be to make mine solar-powered?

Brilliant idea ! And if you could get it scare vermin away as well I'd definately order some off you.

[SueA]

I think cats don't like citrus smells either so you could leave upturned halves of oranges/ grapefruits in your borders & empty them in the mornings as they'd also attract any slugs in the area as well. Killing two birds with one stone as you might say - or not!