Hi
3 alternative solutions
1 100 ml bleach and a dash of washing up liquid to 1 litre of water scrape away top of mound .. find the hole and pour down keep doing this for every fresh run.. it normally takes about 2 months to drive the moles away.

2 Allium molly bulbs planted tend to work pretty well and can be mowed if planted in your lawn

3 mmmmm moles are Haemophiliacs so if you crush glass and place it in the run, they will bleed to death.. brutal I know but it is quite commonly used, not by myself may I add.. I use the bleach and allium methods