Nov 17, 2014 - 06:41 AM
A spider that large probably got inside either from a faulty door seal or through a weep hole. Make sure that all door seals are in good shape, especially on the bottom of the door. Also make sure that any weep holes and cracks, etc, are sealed on the outside of the house. Stuffit Copper wool works well for this.
Inside, I would recommend to get a good flashlight, and a good shop vac or vacuum that can suck up large objects and go on the hunt. Pull furniture, beds, etc. away from the walls and with the flashlight, inspect. Go through the closets and be an inspector. Look for and find the spiders. If you find a spider either kill it, or suck it up. For shop vacs, you could put a small amount of water and some lemon oil in it to kill the spiders when they get sucked up. It will also make the house smell good.
If you want to spray baseboards with the above mentioned products that's fine. Just be aware that many times, this will not kill spiders. Spiders have to be killed by direct contact. Basically drown them.
The Catchmaster 288I Bug Trap also works well to capture them indoors. Simply place them along walls and under furniture to catch them. Replace them as needed.
Hope this helps.