You may want to consider renting a dumpster if you have large amounts of trash, or are planning a special event.
Contact a local dumpster company for more information.
Other local companies also rent dumpsters.
Palmer Clean Outs in Fremont at 603 770 7551 (10 and 15 yard dumpsters or does pickups)
Casella Waste Systems at 453 Route 125 in Brentwood NH
Martin's Disposal at 476 Route 125 in Brentwood NH (various dumpsters and pickups)