My local independent pet shop order in a massive bag of megazorb from a horse supplies place and bring it to my house on their way home free of charge :thumb:
From the horse supply shop. It's about £7 per bag but it costs me petrol too so I buy lots of bags at once
If you get really desperate you could try making your own :lol:
http://www.youtube.com/watch?v=MODxfJqD7M4
All that effort suddenly makes £17 or whatever it is a bag seem worth it!