What Can’t You Store in a Storage Unit?

Which Items Are Prohibited, Ask-First, or Fine to Store?

The quick version. Details for each item follow below.

Can You Store It? Check Your Item Here

Select an item to see whether it’s allowed, needs approval first, or is fine to pack, along with the reason. The checker covers the items people ask about most. It’s a planning guide, so your rental agreement and your local FreeUp Storage team have the final say.

What Items Are Prohibited in Storage Units?

The table shows whether each common item is allowed, with the reason behind each rule. “Not allowed” means it stays out of the unit. “Ask first” means it isn’t banned outright, but your facility may have conditions, so confirm before you pack it.

Why Certain Items Are Restricted or Prohibited at Storage Facilities

Every restriction traces back to a few risks that affect your belongings and the units around you.

Can You Store Paint, Propane, or Gasoline in a Storage Unit?

Paint, propane, and gasoline top nearly every prohibited list for the same reason: they’re flammable, and a storage building is full of other people’s belongings. Gasoline gives off vapors that ignite easily. Oil-based paints, thinners, and many pesticides and cleaners are flammable or corrosive, and some give off harmful fumes if they leak or mix.^[1] Household hazardous waste programs use label words like flammable, corrosive, and toxic to flag these products, so the can itself usually tells you.

Equipment is the easy one to miss. A mower, generator, or pressure washer can still hold fuel in its tank, and a propane cylinder can contain gas even when it feels empty. If you’re moving equipment like that, ask your facility how it wants it prepared before you load the truck.

Leftover paint and chemicals are easiest to deal with before you pack. Your local household hazardous waste program accepts them, ideally in the original labeled containers and never mixed together or poured down the drain.^[1] Waste from a business can follow different rules, so check with your local waste authority.

Can You Store Aerosol Cans or Liquids in a Storage Unit?

No. Aerosol cans and liquids are not allowed in storage units, including at FreeUp Storage. Aerosol cans are pressurized, and many contain flammable propellants. Heat can make a can burst, and a flammable propellant adds fire risk.

Liquids are a different problem. Bottles can leak, tip over, or freeze and crack. A leaking bottle of cleaner, cooking oil, or juice can soak cardboard boxes and stain or ruin whatever sits next to it.

Check your kitchen, bathroom, and garage for items like hairspray, spray paint, cooking spray, bleach, and partly used bottles. Use them up, give them away, or dispose of them properly before moving day. Containers you want to keep, like a pitcher or glass jars, are fine once they’re empty and dry.

Can You Store Food in a Storage Unit?

Perishable food doesn’t belong in a unit, and the reason is as much about rodents as spoilage. Rodents are drawn to food, and they can contaminate belongings with droppings and urine.^[2] Open bags of dog food or birdseed attract them as well as groceries do, so they stay out too.

Coolers and kitchen appliances can hold crumbs and spills you can’t see. Wipe them down and let them dry before you pack, so nothing inside gives pests a reason to visit. Sealed, shelf-stable food is a gray area and facilities differ, so ask before you bring it. Where it’s allowed, thick plastic, metal, or glass containers with tight lids make it harder for pests to get in.^[2]

Can You Store Plants or Pets in a Storage Unit?

No. Plants and animals both need things a storage unit can’t give them.

Plants need light, water, and fresh air, and damp potting soil adds moisture to a closed space. Mold needs moisture to grow.^[5] Take your houseplants with you or ask a friend to look after them, and empty, clean, and dry your planters before you pack them, since leftover soil holds moisture.

Pets are a firmer no. A standard unit has no airflow, no water, and no food, and nobody is there to check on an animal. Temperatures inside can climb or drop past what an animal can handle, and a closed space can become dangerous quickly. That applies to every kind of animal, not just dogs and cats. Fish, reptiles, birds, and small pets can’t be left in a unit either, even for a short time.

Moving with a pet takes its own plan. Keep your pet with you or with someone you trust, and book boarding or a pet sitter for moving day if you need one. Crates, cages, and empty tanks can go in storage once they’re clean and dry, but the animal can’t.

Can You Store Batteries in a Storage Unit?

Ask first. Batteries are not a flat yes or no, because the answer depends on the type of battery and the facility’s policy. Lithium-ion batteries carry the most risk. They power e-bikes, scooters, power tools, laptops, and portable power stations, and a damaged or overheating one can catch fire.^[3] In a building full of other people’s belongings, facilities take that seriously, so some accept these items and some don’t. Large batteries, like those from a car or boat, are worth asking about too.

When you ask, say whether the battery is built in or removable and how many you have. Keep spares away from anything that can burn, and follow the manufacturer’s storage directions for any equipment the facility accepts. Don’t plan to charge devices inside your unit.^[3]

Some batteries shouldn’t go into storage at all. If one has an odor, changes color or shape, leaks, makes odd noises, or gets too hot, stop using it and contact the manufacturer for handling instructions.^[3] Old lithium-ion batteries don’t belong in household trash or curbside recycling either. Take them to a battery recycling or household hazardous waste collection point.^[4]

Can You Store Guns in a Storage Unit?

No. Firearms are not allowed in most storage units, including at FreeUp Storage. Ammunition, gunpowder, and fireworks are off limits at standard facilities as well, because they add fire and injury risk.

A storage property holds belongings from many different renters, which is why firearms are treated as a safety and liability concern there. Policies still vary by operator and location, so read the rental agreement before you assume a rule from one facility applies at another.

If you need a place for a firearm during a move or a downsize, look at options built for that. A home gun safe, a licensed dealer that offers storage, or a trusted family member who can legally hold it are common choices. Check your local laws before you transfer or transport a firearm.

Can You Store Tires, Engines, or Auto Parts in a Storage Unit?

Ask first. Engines, transmissions, and other automotive parts can still contain oil, fuel, or coolant, and those fluids can leak onto the floor of a unit and onto whatever sits near it. Tires are a lower risk, but they take up more room than most people expect, and some facilities set their own rules for them.

Tell the facility what you have and how many, and ask how it wants the items prepared. Draining fluids, wiping parts down, and capping or bagging anything that could drip is a good start. Keep tires on a pallet or shelf, off bare concrete and away from heat sources.

Can You Store a Car, Boat, or RV in a Storage Unit?

FreeUp Storage offers dedicated vehicle, RV, and boat spaces at many locations, in covered and uncovered options, so your vehicle doesn’t need to fit in a standard unit. Covered spaces add protection from sun and weather, so the right choice depends on what you’re storing and how long it will sit.

Measure before you rent. Include the hitch on a trailer and the height of any roof attachments, then ask about clearance and turning room so you know you can get in and out easily. Ask about paperwork too, and about the facility’s rules for fluids and batteries.

One rule never changes: don’t run a vehicle or fuel-powered equipment inside an enclosed space. Engine exhaust contains carbon monoxide, and it can build up where air can’t move.^[6] Explore boat storage or RV storage.

What Can a Small Business Store in a Storage Unit?

Small businesses use storage units to keep inventory, supplies, and equipment out of office, retail, and garage space. Good fits include boxed merchandise, shelving, display fixtures, seasonal stock, trade show materials, tools, and paper records in sealed boxes. Shelving and clear labels by product or order date help you grab stock without unpacking a pallet.

Business inventory follows the same rules as personal items. A stock of food, chemicals, aerosols, or batteries doesn’t get a pass because it’s for a business, so check your inventory against the prohibited list before you move it in.

Check what the facility allows before you rent. Ask separately if you plan to assemble products, repair equipment, ship orders from the unit, or meet customers there, since those uses can come with their own rules.

What Items Are Allowed in a Storage Unit?

Most everyday belongings are welcome in a storage unit: furniture, mattresses, clothing, electronics, books, kitchenware, and seasonal gear. These items don’t burn easily, leak, or attract pests, which is why facilities accept them.

How you pack matters as much as what you pack. Let anything damp dry fully first, since trapped moisture is how mold starts.^[5] Label boxes on two sides, put heavy boxes on the bottom, and leave an aisle down the middle so you can reach the holiday lights without unloading half the unit.

For wood furniture, electronics, and photos, consider climate controlled storage to protect against temperature swings. Our guide explains whether you need it.

What Should You Do With Items You Can’t Store?

Items that can’t go in your unit still need somewhere to go, and some of them, like paint and batteries, shouldn’t go in the regular trash. Most have a simple solution: a household hazardous waste program, a recycling drop-off, or a friend who can take them for now. The table below shows a better option for each common item, so you can sort them out before moving day.

Which FreeUp Storage Space Fits Your Needs?

How Do You Check Your Items Before Packing?

Frequently Asked Questions

Need Help Confirming What You Can Store?

The rules for each facility are written into its rental agreement, and the local team can tell you how they apply to your items. Before you rent, ask for the prohibited-items list and mention anything unusual, like batteries, tires, or equipment with fuel. Once your items are sorted, our storage unit size guide and storage calculator can help you pick the right size.