In article , Britannica
writes
We had a serious problem with a mole last autumn. The mole was dealt
with but after several months we are still suffering from an almost
total lack of earthworms in the garden -very few are seen when
digging.

Where to buy worms ? I believe those sold locally by fishing-tackle
shops are unsuitable ?

I wouldn't have thought the mole was totally to blame - more that the
conditions aren't right for a high population of worms, so buy buying
some and adding them might simply be a waste of money. Url below might
tell more

--
Kay Easton

Edward's earthworm page:
http://www.scarboro.demon.co.uk/edward/index.htm