I've seen this and other data on moles and just to start your week off well, I must tell you that I have found no long term solution to getting rid of mine. If anyone finds a solution then please let me know. There must be one, what do golf courses do?
When I was first here, the commune had a mole killer who attended and put poison down the tunnels which was effective in the short term but within a few months, new moles had arrived. Sadly, mole poisoners are no longer allowed. I understand that this activity was stopped centrally.
So, I tried being Buddist and purchased some battery powered sonic widgets which I put in some molehills and was staggered when later the same day I actually saw activity in the earth mound in which one had been placed so no solution there - at least not with 'my' moles.
It was in an 'Espace Vert' that I found some mole poison which I put down the tunnels and similar to the 'pro' job, this worked in the short term but as someone has written earlier, moles know that digging is hard work and it wasn't long before a new occupant arrived. The poison is easy to use and is in solid form which when placed in a tunnel becomes activated by the damp and releases a heavier than air gas which fills the tunnels.
Because our property was empty for a few years before we arrived, the moles were able to work unhindered and I understand that some of the deeper galleries may be over a metre down so a gas that drops all the way down works for me.
As of today, the most recent and very active occupant of the system in the lawn seems to be sleeping as no new activity has been seen for 10 days or so but I know that the b*gg*r is still there so it's off to the garden center for me to get some more poison to kill it which I dislike doing but cannot see any other solution. I wouldn't fell quite so bad if this was a one off activity but it isn't. It has to be an enduring one and I feel like Dr Crippen or whichever poisoner you prefer.
The really irritating thing is that I have about a hectare of land which is around 2.5 acres, most of which is unused paddock and if there really is only 1 mole per acre, why do my 2.5 moles congregate on the lawn in front of the house?