Cats.

[Karen Atkinson]

A cat has chosen to regularly do its business on my patch! Any tips to deter it (apart from a dog?)

[Karen Atkinson]

[Obelixx]

If you are around all the time then a well aimed jet of water from a water pistol will see it off without causing any harm.     If you are smetimes absent, then you can use a device called a water scarecrow.  http://www.deteracat.co.uk/scarecrow_water_jet_pack.htm

It attaches to a water supply and has a sensor which makes a spray go off.   It's good against cats, foxes, herons and so on but the sensor needs to be moved occasionally as cats aren't daft and soon learn where the trigger point is.

[asj]

You could try this
http://www.hedging.co.uk/acatalog/product_54609.html
Works for friends.

[Vinlander]

Get your own cat - preferably a tom and preferably un-snipped (snipping 99.99% of males is impossible anyway; anyone who thinks anything less than that will have any impact on kitten production... simply isn't living in the real world).

Tomcats - especially hormone-laced ones - have a big territory, keep lesser cats out of it and crap around its edges - well away from your plot and hopefully in the garden of your nemesis.

They will also  make mincemeat of your rats and mice - and maybe the odd bird too - hopefully those will mostly be your enemies.

You can tip the balance in favour of the useful birds like robins and thrushes by giving them bacon rind or lard balls on the washing line or some other feeding area the cats can't get to.

Birds that won't eat animal fats are in general the ones that don't eat insects - so they are your enemies anyway...

Cruel but fair!

Cheers.

[gp.girl]

Not so much fun when the b*gger sprays in the house and then there's the vet bills if he fights......and neutered cats can be just as territorial too, Becky - neutered queen - moved into new area, sent local tom to the vets because he wouldn't give in.

You need a dominant cat that's all, easy to spot put the cat in a new home if it beats up the older residents, runs them off the food etc its dominant.

[beanie3]

spray with water.

If any of my five cats went next door to do their business i would suggest water to my neighbour they hate it.  It doesnt harm the cats but they will not want to return!