Ssscary Stuff!

I have always been far more afraid of humans than animals. So, when I caught a really sizeable Puff Adder in my garden, I proudly showed off the photos (which I've since lost) to my daughter. Reeling in horror (a little dramatically, I'd say), she Googled Puff Adder bites. After seeing this:

...and this:

I must say, I'm cured. So, what do I do to keep Puff Adders away? Once caught, I put him in a bucket and drove him about 2km from my house. This is obviously not optimal (the price of petrol is ridiculous these days), so I need to keep them off my property without hurting them or endangering my other animals. Any suggestions? Feel free to email me directly on ameliaduplessis{at}yahoo{dot}co{dot}uk.