There are many, many products on the market which claim to discourage, trap alive or kill moles. The experience of a large number of professional molecatchers has shown that:
Most of the deterants are useless; indeed some may even attract moles.
Trapping moles alive is inhumane because:
Some of the kill-traps available on the internet are illegal for use in the UK.
All traps can be completely ineffective when used by inexperienced hands.
I use traditional methods of mole control using only humane traps. I do not use gas or poisons. I comply with all of the code of practice of The Guild of British Molecatchers.