"Beware of the dog" signs are not as good as an actual dog but should have some effect.
If power is a problem you can get solar powered motion activated lights
e.g. http://www.maplin.co.uk/15-led-solar-pir-light-509258?c=froogle&u=509258&t=module
If you subscribe to their newsletter and then spend over £35 they'll send you a free one.
I've not used them but it doesn't sound like a bad idea.
If you can set them up so they're not easy to get at it would help.
You can also get CCTV recording equipment pretty cheaply these days - technically you need to put up signs & not cover public highways and you need reasonable quality if you want it to actually get a conviction.
I really feel for you, this kind of thing really tempts you to see the worst in people - try not to let it get you down.
If power is a problem you can get solar powered motion activated lights
e.g. http://www.maplin.co.uk/15-led-solar-pir-light-509258?c=froogle&u=509258&t=module
If you subscribe to their newsletter and then spend over £35 they'll send you a free one.
I've not used them but it doesn't sound like a bad idea.
If you can set them up so they're not easy to get at it would help.
You can also get CCTV recording equipment pretty cheaply these days - technically you need to put up signs & not cover public highways and you need reasonable quality if you want it to actually get a conviction.
I really feel for you, this kind of thing really tempts you to see the worst in people - try not to let it get you down.