Storage containers are a practical solution for moving, home renovations, seasonal cleanouts, and job sites. They offer flexibility, security, and convenience, but not everything belongs inside them.
At Calloway Storage, we also offer onsite self-storage and climate storage, which means there’s a safe storage solution for nearly everything. Understanding what items are not suitable for portable storage, and knowing your alternatives, can help protect your belongings and prevent damage, safety issues, or policy violations.
Here’s a breakdown of what you should avoid storing in a container, and the best alternatives we offer.
Perishable Food Items
Food, whether fresh, frozen, or even some canned goods, should never be stored in a portable unit. Without proper ventilation or climate control, food can spoil quickly, attract pests, and create strong odors that are difficult to remove.
Hazardous or Flammable Materials
Storing hazardous items in a storage container presents serious safety risks. These include anything flammable, combustible, or potentially explosive, such as:
- Propane tanks or gas cans
- Paint thinners or solvents
- Fireworks or ammunition
- Fertilizers or pesticides
These materials are restricted for storage due to fire hazards and environmental concerns.
Better option:
- Use appropriate outdoor sheds or garages for short-term storage.
- Consult local regulations or your municipal waste authority for safe disposal options.
Live Animals or Plants
Storage containers are not designed for living organisms. With no natural light, limited airflow and extreme temperature fluctuations daily, even temporary placement can lead to overheating, freezing, or suffocation. Storing plants can also invite pests or mold into the unit.
Better option:
- Keep pets in safe environments designed for animal care.
- Store plants in climate-controlled spaces with proper light and airflow.

Wet or Damp Items
Moisture is a common cause of damage in any type of storage. Placing damp items like wet clothing, recently washed patio cushions, or unsealed cardboard boxes into a sealed unit can lead to mold, mildew, and odors.
Tips to avoid moisture issues:
- Allow items to dry completely before packing.
- Use plastic totes instead of cardboard.
- Consider adding moisture absorbers or desiccant packs.
- Never move stuff into the container when it’s raining or snowing outside
Valuables and Irreplaceable Items
While portable containers are secure, they’re not the best place for high-value or sentimental items that may be affected by extreme temperatures or at higher risk in the event of theft or damage.
Avoid storing:
- Expensive electronics or jewelry
- Important legal documents or passports
- Family heirlooms or irreplaceable keepsakes
Temperature-Sensitive Items
Ontario weather can be unpredictable, with hot, humid summers and freezing winters. This can take a toll on items like:
- Vinyl records or musical instruments
- Artwork or framed photos
- Candles or cosmetics
- Delicate electronics or wood furniture
These materials may warp, melt, crack, or deteriorate in a non-climate-controlled environment.
Illegal or Restricted Items
Storing illegal or restricted items not only violates your rental agreement, but it may also result in legal consequences. This includes:
- Unregistered firearms
- Illicit drugs or paraphernalia
- Stolen goods or counterfeit items
Better option:
- Always follow local laws and guidelines.
- If you are unsure whether something is permitted, contact us before storing.
Where Should You Store It Instead?
At Calloway Storage, we offer multiple options to suit your storage needs:
Portable Storage Containers (Delivered to Your Location):
Ideal for:
- Properly wrapped furniture
- Renovation tools
- Seasonal items
- General household storage
Onsite Self-Storage Containers:
Perfect for:
- Overflow from moves or renovations
- Small business inventory
- Easy-access storage close to home
Climate Storage Containers:
Best for:
- Electronics
- Documents and media
- Items sensitive to humidity or temperature
Final Thoughts
Storing your belongings safely starts with knowing what not to store, and where your items will be best protected. Whether you need portable storage on your property, an accessible drive-up unit, or the protection of climate control, Calloway Storage has you covered.
If you’re unsure about a specific item, reach out to our team. We’re happy to offer guidance and help you choose the best solution. Contact us today or visit www.callowaystorage.com to request a quote.