I am a substitute custodian and am on call. So I only fill in for people who call in sick or personal leave. The hardest part of the job is trying to get hired full time. Management is the schools principal and they are great. Typical day is cleaning desks, floors, bathrooms, gym, and just any thing that is in your area to clean for that call in. There are many different schools (High Schools and Jr. High Schools) and can be called in to any of them for one night or a set period of time. All schools are different in size and never know what your area of cleaning will be.