Clean buildings, floors, stairways, entrances, furniture, washrooms, walls and windows.. Dispose of garbage and remove hazardous objects from building grounds.. Conduct interior and exterior security checks and lock or unlock doors and windows.. Coordinate custodial work around community use of schools and communicate school rules to facility users.. Move and set up classroom furniture, equipment and supplies.. Report unsafe conditions, custodial supply needs and building repairs.. Perform minor repairs and maintenance, including replacing bulbs, tubes and filters, boarding broken windows and clearing plumbing blockages.. Deliver supplies and equipment and assist with unloading large deliveries.. Clear walkways by shoveling snow and removing ice, leaves and debris.