Well, building materials are expensive for one. Like, I had to have my roof replaced in the last year or two, and it was $6k, and they only ripped and replaced the plywood, barrier and shingles. They didn’t have to worry about cleaning out organic matter, structural issues involved with opening up a wall and removing shit, or the complications of dealing with utilities in wall.

When you factor all the potential issues in, especially if it was a large infestation, costs can add up quickly.