What Can You Not Store in a Storage Container? Items to Avoid

Renting a storage container is a convenient way to create extra space for household belongings, business inventory, tools, equipment, and construction materials. However, not everything is suitable for storage inside a container.

If you’re wondering what can you not store in a storage container, the answer generally includes hazardous materials, flammable substances, perishable food, certain chemicals, illegal items, and belongings that require specialized temperature or humidity control.

Storage restrictions can vary depending on the rental company, local regulations, insurance requirements, and the type of container.

Before loading your belongings, always check the rental agreement and confirm any questions with your storage container provider.

CODR Storage Container Rental offers 8-by-16 ft. storage containers for $169 per month, with flexible month-to-month rental and delivery throughout Central Oregon.

Storage containers are designed to provide additional storage space, but they are not intended to function as hazardous-material storage facilities, refrigerated warehouses, or specialized climate-controlled environments.

Certain items can create safety risks, attract pests, damage other belongings, or require storage conditions that a standard container cannot provide.

The main concerns include:

• Fire and explosion hazards
• Chemical leaks and harmful fumes
• Food spoilage and pest infestations
• Moisture and temperature sensitivity
• Legal and insurance restrictions
• Damage to the container or other stored property

Understanding these restrictions before loading can help you protect your belongings and avoid problems during your rental.

Flammable liquids are among the most important items to keep out of a standard storage container.

These materials can create fire hazards, particularly when exposed to heat, sparks, or other ignition sources.

Examples include:

• Gasoline and petrol
• Diesel fuel
• Kerosene
• Certain solvents and paint thinners
• Lighter fluid
• Flammable cleaning products

Even small quantities of fuel left in equipment can create concerns. Before storing lawnmowers, generators, or other fuel-powered equipment, check the manufacturer’s instructions and your rental agreement.

Never assume that sealing a fuel container makes it safe for storage inside a rented container.

Propane cylinders, gas bottles, and compressed gas cylinders can present fire, pressure, or leakage hazards.

Examples include:

• Propane tanks
• LPG cylinders
• Butane gas canisters
• Oxygen cylinders
• Acetylene cylinders
• Other pressurized gas containers

A leaking gas cylinder can create a dangerous atmosphere, particularly inside an enclosed space.

Do not place gas cylinders in a storage container unless the rental company and applicable safety requirements specifically permit the proposed storage arrangement.

For ordinary household storage, arrange an appropriate approved storage location for these items instead.

Fireworks and explosive materials should not be stored in an ordinary rented storage container.

Examples include:

• Fireworks
• Explosives
• Detonators
• Blasting materials
• Ammunition
• Other explosive or pyrotechnic materials

These items can create serious fire, explosion, and legal risks.

Check applicable laws and storage requirements for any regulated materials. Do not bring prohibited explosive items into a rented storage container.

Certain chemicals can release harmful fumes, leak, react with other substances, or create environmental hazards.

Examples may include:

• Industrial chemicals
• Pesticides and concentrated insecticides
• Strong acids and corrosive substances
• Certain cleaning chemicals
• Toxic substances
• Chemical waste

Some household cleaning products may be perfectly ordinary to keep at home but unsuitable for storage in a rented container, depending on their ingredients and the rental company’s rules.

Never combine chemicals or transfer them into unlabelled containers for storage.

If you are unsure whether a product is hazardous, check its label and Safety Data Sheet (SDS) and contact the rental provider before storing it.

Food that can spoil or attract pests should generally not be stored in a standard storage container.

Examples include:

• Fresh meat and fish
• Dairy products
• Fresh fruits and vegetables
• Cooked food
• Open food packages
• Food waste

A standard storage container is not a refrigerator or temperature-controlled food storage facility.

Even packaged food can attract rodents or insects if packaging is damaged or exposed to pests.

For food-related business inventory, use a storage environment specifically designed and approved for the products being stored.

Never store pets, livestock, or other living animals inside a standard storage container.

Animals require appropriate ventilation, temperature conditions, water, and ongoing care.

Live plants may also be unsuitable for long-term storage because they require appropriate light, airflow, and watering.

If you need temporary space for gardening supplies, pots, or non-living landscaping materials, check that the items are dry and suitable for storage.

Wet items can introduce moisture into a container and increase the risk of condensation, mildew, and damage to other belongings.

Avoid storing:

• Wet clothing
• Damp carpets
• Wet mattresses
• Waterlogged furniture
• Damp cardboard boxes
• Wet outdoor equipment

Allow items to dry thoroughly before packing them.

Moisture can become a particular concern during changing weather conditions in Central Oregon.

For more information, read our guide on Do Storage Containers Get Condensation? Causes, Prevention & Moisture Control Tips, which explains why moisture forms and how to reduce the risk of damage to stored belongings.

A standard storage container generally does not provide precise temperature or humidity control.

Avoid storing items that require continuous refrigeration, freezing, or tightly controlled environmental conditions unless the storage facility specifically provides an appropriate service.

Examples include:

• Refrigerated medicines
• Temperature-sensitive biological materials
• Certain laboratory supplies
• Perishable food
• Items with strict temperature-storage requirements

Some valuable belongings, such as delicate artwork, musical instruments, photographs, and certain electronics, may also require specialized storage conditions.

Check the manufacturer’s storage recommendations before placing sensitive items inside a standard container.

This includes stolen merchandise, illegal drugs, contraband, and other prohibited property.

Rental agreements generally establish restrictions on unlawful use of the container.

Always ensure that the belongings you store are legally owned or lawfully in your possession.

Although cash and jewellery are not necessarily hazardous, a standard storage container may not provide the level of security or insurance protection appropriate for extremely valuable belongings.

Consider avoiding storage of:

• Large amounts of cash
• Expensive jewellery
• Rare collectibles
• Important original documents
• Irreplaceable family heirlooms
• High-value watches

For these belongings, a suitable safe, secure deposit facility, or specialized storage service may be more appropriate.

Check the rental agreement and insurance policy to understand what property is covered and what exclusions apply.

While ordinary documents may be stored in a container if properly packed, important originals are often better kept in a secure, dry location where they can be accessed when needed.

If documents must be stored temporarily, use suitable protective containers and keep them away from potential moisture sources.

Construction materials are commonly stored in containers, but some products require special handling.

Examples that may be unsuitable include:

• Flammable paints and solvents
• Certain adhesives
• Chemical coatings
• Products that release harmful fumes
• Materials with specific temperature requirements

Do not assume that every construction product is suitable for storage just because the container is being used at a construction site.

Check the product’s label, storage instructions, and rental restrictions.

For suitable tools, equipment, and construction materials, CODR offers construction storage container rental throughout Central Oregon.

Avoid storing large quantities of wet leaves, grass clippings, rotting vegetation, or damp organic waste.

Wet firewood can also retain moisture and attract insects.

If you need to store dry gardening equipment, outdoor tools, or suitable landscaping supplies, make sure the items are clean and dry before loading.

Belongings containing food residue, organic material, or pest infestations can create problems inside a storage container.

Examples include:

• Food-contaminated packaging
• Unclean kitchen equipment
• Pest-infested furniture
• Dirty mattresses
• Unsealed pet food
• Items containing organic waste

Clean and inspect belongings before storage.

If you are storing furniture or household items during a move or renovation, make sure they are dry and free of food residue or pests.

Our residential storage container rental page explains how storage containers can be used for moving, remodeling, decluttering, and other home storage needs.

Even if an item does not appear on the lists above, it may still be prohibited by the rental company’s policies.

Storage providers may have restrictions relating to:

• Hazardous materials
• Weapons and regulated items
• Perishable goods
• Illegal property
• High-value belongings
• Certain commercial materials
• Items that could damage the container

Always read the rental agreement before loading your belongings.

If you have a particular item in mind, ask the rental company whether it is permitted rather than assuming it is acceptable.

Examples of items commonly suitable for storage, when properly prepared, include:

If you’re planning a home renovation or move, our guide to storage container vs storage unit cost can help you compare storage options and understand the costs involved.

Make sure belongings are completely dry, especially after exposure to rain, cleaning, or outdoor conditions.

Avoid damaged cardboard, leaking containers, or packaging that can easily absorb moisture.

Keep important or frequently needed belongings accessible.

Organize items in a way that allows you to reach what you need.

See our guide on how to prepare a spot for a storage container for detailed site preparation advice.

Furniture, boxes, clothing, and household goods may be suitable when properly prepared.

Food, chemicals, pharmaceuticals, and other regulated inventory may require specialized storage facilities.

However, fuels, compressed gases, hazardous chemicals, and other regulated materials require appropriate storage arrangements.

Avoid hazardous materials, flammable substances, compressed gases, perishable food, illegal items, and belongings that require specialized environmental conditions unless an appropriate and expressly permitted storage arrangement is available.

For ordinary household, business, and construction storage, prepare your belongings properly, keep them dry, and check the rental agreement before loading.

CODR Storage Container Rental offers 8-by-16 ft. storage containers for $169 per month, with flexible month-to-month rental and delivery throughout Central Oregon.

If you need additional storage for your home, business, or project, contact CODR Storage Container Rental to discuss your requirements.