So I have been using hairspray for additional bed adhesion for quite some time. I do not clean my bed regularly but when the build up gets kind of lumpy I know it is time. The interesting part was noticed this morning. It has been raining non-stop here for a few days, my office (where the printer is located) has a windows protected by a porch and I have had it open all this time. Enough time that there is a noticeable but not uncomfortable increase in humidity in that room. I went through my normal routine before testing a print and scrapped the bed with my 6" wide putty knife to knock off the lumps, but instead all the hairspray came off. My bed was as clean as if I had used glass cleaner on it. Now I see I will need to monitor room humidity a bit better and finally understand why people who regularly use hairspray complain so much about humid weather.