[Rampant_Weasel]

thanks for the advice compo - i intend to use it for pest control in my own garden only, hence i dont want to spend too much, just protect my crops...and the birds from those `orrible squirrels.

[Stripey_cat]

I was told that Rats do not like the smell of mint and so you could grow some of that.

I've not actually tried it as I don't have a rat problem.

The little s***s nested under a shed planted round with mint, so I think it may not work if there's a tempting food-source nearby.

[Rampant_Weasel]

rats must be killed theres no other way unless u want thousands of em and every disease known to man...

[Leligdowicz]

Does anyone know a way of controlling rats without harming other wildlife. We have a problem with them eating EVERYTHING but are worried about poisoning other wildlife too. Traps not working...

Carbon Monoxide works a treat. Stick a rubber hose up the old exhaust pipe & down the rat hole .Rev like mad for a few minutes and watch the blighters scarper! You'll also locate the other holes as the fumes start to escape.

[Yorkie]

Air guns are a controlled item in the uk, and obviously subject to very tight controls. (doesnt stop the local chavs though)
   http://f4bscale.worldonline.co.uk/gunlaw.htm      to see more on it.
We have to get written permission to use on private land from the land owner, usualy a farmer with a rabbit or rat problem.
 If its a road you want to go down, contact your local gun shop who will give you all the best advice and probably point you at a gun club for training.
 How responsible was that ?!!  Must be getting older Seriously though, some people can treat these guns as toys, in fact they are classed as a weapon. Have safe fun!

Here's a document from the home office - as far as I know it still represents current law.

http://police.homeoffice.gov.uk/news-and-publications/publication/operational-policing/AirWeaponsLeafletAW.pdf?view=Binary