Although self storage facilities offer a great way to free up space, there are restrictions as to what can be placed in a unit or parked in an outdoor space. Every storage company has its own set of rules, but there are certain items that all storage companies prohibit for legal and safety reasons. The items described below are actually illegal to place in a storage unit.

Due to the large amount of buildings and items stored in them that could catch fire, it is illegal to store anything that is flammable or combustible. This includes fireworks of any type, aerosol cans or other items that are pressurized, and all types of fuel. If a lawn mower or other fuel-powered tool is being stored, the fuel must be drained out prior to bringing it to the facility. Along with the flammable and combustible materials, it is also illegal to store any chemicals or other things that are considered hazardous or toxic because if they were to spill it could impose a health threat to everyone nearby.