Hampton township recently issued the following announcement.
Waste Management will collect, remove and dispose of all Christmas trees placed at the curb in the months of December, January and February, the same day as your scheduled trash/recycling collection. Trees must be cut into lengths no greater than 6 feet.
Allegheny County is also offering its annual Christmas Tree Recycling Program this holiday season. County residents may drop off Christmas trees through Friday, January 14, 2022, at all nine county parks from 8:00 am until dusk. Recycled trees will be mulched and used in the county parks. Local drop off locations are Hartwood Acres Park (Middle Road Parking Lot) and North Park (Swimming Pool Parking Lot. For more information regarding the County's program: Allegheny County Christmas Tree Recycling Program
All lights, decorations, tinsel and stands must be removed from trees prior to drop-off.
Original source can be found here.