We've had voles over the years but this year, we could not manage the problem ourselves. When we heard that one of neighbours had them in their house looking for food and the voles would create havoc trying to get out of the house, we decided to get professional help.
I contacted a few companies and Spartan seemed to be the best for the price which included a 3-month guarantee (they don't charge per visit). Commercial grade poison was put into each hole or entry area. Bait boxes were put in the back yard and garage.
Jarrod provided quick response, followup and education.
It's been 5 weeks and no further vole activity!