what can I do to stop cats using my veg patch to poo/wee

[MousyMouse]

it stinks
we are living in cat central...
I heard they don't like peppermint, but they don't seem to mind the many peppermint plants.

Fill a two litre pop bottle with water and strip off any labels. Lay, on its side, around the edge of the patch. The reflection of the cats eyes in it will scare them away silly buggers

Citric acid works.
Get some inexpensive concentrated squash and tip it around the area.
Only thing I have found to work, but you have to reapply when it has rained.

great, thanks. new things to try.
I found that valerian deters the fox from digging, but the cats like rolling in it...

What about a fruit cage?

Fruit cage is expensive and a bit of a faff to deal with when you want to pick the veg.

Have you got any prickly shrubs? Prunings from things like holly, stuck into the soil, will deter cats from digging. They like open ground best, so plant your beds as densely as you can, too.