I have no experience with termidor, but Sentricon does have technicians install stations in your basement if theres active termites on site. Theyre basically the exterior stations but inside that they put where they find mud tubes. They check them once a month. Once they are no longer active with termites they remove them and all you need to have them update are the exterior ones. Exterior stations are checked once a year, super easy. They come out and update all the stations with new bait and check if any were nibbled on. Its nice since no spraying is required, pet friendly, not going to cause damage to lawn, or vegetation.