Caution: Slippery when Slimer-ed.

Who you gonna call? The Hofstra Law School Maintenance Department! As we all know from our daily encounters with the supernatural, schools are prime haunting areas: there's lots of books to levitate and throw around, multi-stall bathrooms to explode with blood, young people having sex (ghosts, monsters and killers HATE that), and most importantly, there's an endless supply of restless souls that were beaten out of future law graduates. So basically, these janitors deserve a raise.

Sources: Redditor goodguygregIRL