I have been doing remodeling construction in my basement the past year and a half. I used the bathroom as a storage room during construction. Consequently, I was unable to use the bathroom, so the toilet hasn't been flushed since construction began. The basement is now done and I have emptied the bathroom. When I opened the toilet lid, there was no water left in the bowl and a lot of tan, chalky residue. I know, I should have been flushing it periodically. So, does anyone have any suggestions what to do now? Hire a plumber? Replace the toilet? I don't dare flush it or put water in it, because I'm not sure what it'll do.