They discovered carpenter ants in the demolition of the addition. I would have thought they would bring in an exterminator to find and eradicate the nest as Carpenter Ants will move their nest if they are disturbed - and relocate somewhere else - perhaps further within the existing home (or a neighbor's home).
Detroit | Rebirth in Detroit
Original Air Date: June 01, 2017
Season 38, Episode 26
Ask TOH | Hawaii Makes 50!
Original Air Date: June 01, 2017
Season 15, Episode 26
TV Listings
Find TV listings for This Old House and Ask This Old House in your area.
Carpenter ants nest in wet wood. Generally sealing a leak or removing the affected area will cause them to move out.
Jack