This problem drives me to distraction too. In the summer, I can't let the kids out sometimes, it's so bad.
All the posters on here will have their favourite; there are repellents that can be bought- chemical and electronic- but also some people make their own. The ultrasonic one can be costly although a company called Primrose does a solar powered one for less than a tenner, I believe. They cover a limited area. It sort of 'boxes' the cat's ears and in time they learn to avoid.
Some people use orange & lemon peel- but it's unsightly if you use more than a little & I can't say I've seen it work.
I use curry powder- cheap bulk stuff. They hate it. It's plant based so it won't do much damage and it does actually work while it lasts, but rain washes it in.
See what other posters think.
Originally Posted by: Bertwhistle