An update - i did get some moth balls from a big wilko and i did put a hose into their runs - for at least 30 mins and they still didn't fill up or overflow anywhere else
The moth balls had some success but i used quite a few packets. They obviously didn't like them but tended to just throw up another mole hill a couple of feet away rather than clearing out altogether.
Anyway the little B****** have recently started getting in my raised veg beds as well - so went back to the big wilkinsons to get more moth balls only to discover they don't sell them anymore because of them chemicals in them -
but then as i was leaving the store... a result - there on the sale shelf was a solar powered mole repeller for just £1. Got home and phoned my local wilko to see if they had any of the reduced mole repellers - No but the very nice lady did a search on her computer and found 2 more at Hucknall and even arranged for them to be transferred
.
So now war is resumed with 3 mole repellers... maybe this time!