On Mon, 3 May 2010 17:40:13 +0100, Muddymike wrote:

You have rats living under your pond. Time for bait.

A 7" dia hole is just a bit on the large size for a rat hole. It's
big for rabbit, they are normally about 4" dia. 7" is badger/fox
size...

Any tracks?

--
Cheers
Dave.