I go outta my way to relocate Daddy-long-legs, spiders, most anything. However, when the spiders in the place started to show up ten to fifteen times everyday, and I'd been bitten a number of times, I turned for advice to my trusted friend, Mr Raid. (Canada generally has no spiders that are poisonous. I understand that Australia has a gang of them.) Anyway, I pushed his button for about six weeks every five days or so and now the spiders are gone. (I would spray in the morning before I left for twelve hours, return and open the windows and leave for another four or so hours.) As to allergic reactions: they are BAD. Big-time bad. I know you likely don't need the advice, but if you have any friends who react violently to vespidae stings, there are epipens available from druggists via a doctor's prescription. They are a life-saving necessity for some folks. Simple jab to the thigh--through the pants or dress--and the allergic reaction gets held up enough to save a person's life.