A bit more info would be useful
Assuming you want to rid your garden of moles, the only foolproof way is to hire a professional mole catcher but you'll need to do this on a regular basis - best done in early spring when they're on the move looking for mates and then later when the babies leave the nest and set up their own territories. Lots of tunnelling at those times.
I have found that mole reppelling plants, moth balls in tunnels, bottles and other noisy devices just don't work. A friend told me her husband put the hose pipe in the tunnels and left it on on all night to flood them out. That worked but water is precious and, if you're on a meter, expensive.
Well you are just saying "any ideas"-perhaps you can describe the problem?
Agricultural merchants sell traps. You will need several, it is no good just setting one.
We tried humane traps too but you have to be very nifty setting them and not get any smell of human on them or the moles just go round. Our cats have caught two in 20 years and our dogs have tried diiging up the grass to get to them when they hear them tunnelling. Looks like a bomb site afterwards.
Our moles also tunnel under gravel paths, wood chip paths, veggie beds, flower borders and even the road to get to and from the paddock across the road. We did use a Mole Blaster till we got the dogs. Very effective and very satisfying but not available in the UK.
There is an explosive method of destroying moles in UK. Developed by a Young Farmer I believe.
Only thing is canny farmers like to see the dead bodies before they pay up!
One other method - which I am not advocating, just repeating - is to stand over a mole-hill with a garden fork and thrust the fork into the mole-hill when it heaves.