I rent a townhome. Today, after grilling, I walk into my back door and saw a spider on the wall.I rent a townhome. Today, after grilling, I walk into my back door and saw a spider on the wall. My son and I looked at it and realized it was a tick! I took it outside although I probably should have just killed. What do I need to do to prevent this from happening again? Do we need to spray something?