Last year I had an infestation of carpenter ants, so I contacted a pest control company and paid for a year's worth of service. Now, exactly a week after the contract expired, I'm seeing them come back.
I'm planning on taking care of it myself this year, since the chemicals cost less than a month's worth of service from the pest control company.
I know that the two most common ways of treating for carpenter ants are:
1.) Boric acid bait
2.) Fipronil spray
Is either one of these treatments more effective than the other, and/or is the combination of these treatments more effective than either on its own?