Top 10 Items You Shouldn’t Store in a Storage Unit

Self-storage units are incredibly useful for clearing space, moving, or keeping items secure during transitions. However, not everything belongs in a storage unit — and storing the wrong items can lead to damage, legal issues, or safety hazards.

At MTT Storage in Cheshire County, NH, we prioritize safety and compliance, which is why we’re sharing the top 10 items that should never be placed in a storage unit.

1. Perishable Food or Pet Food

Why Not: Food attracts rodents, insects, and mold. Even sealed packages can break down or attract pests over time.

Alternative: Store only non-perishable, sealed items if permitted — or better yet, keep food storage at home in a climate-controlled pantry.

2. Living Things (Plants or Animals)

Why Not: Storage units lack sunlight, airflow, and proper temperature control for living organisms. Housing any live animal is not just unethical — it’s illegal. This is also why people cannot live or sleep in a storage unit.

Alternative: Use plant boarding services or ask a friend to care for your plants during a move.

3. Hazardous Materials

Includes: Gasoline, propane, paint, chemicals, cleaners, fireworks, and fertilizers.

Why Not: These items are flammable, toxic, or reactive and pose serious fire or environmental risks.

Alternative: Follow proper disposal procedures or store these items in facilities designed for hazardous materials.

4. Illegal Items or Stolen Goods

Why Not: Possessing or storing illegal items can lead to criminal charges. Storage facilities like MTT Storage cooperate with law enforcement if illegal contents are suspected.

Alternative: Don’t take the risk. If you’re unsure whether something is legal to store, ask your storage provider.

5. Unregistered or Non-Operational Vehicles

Why Not: Many storage facilities require that stored vehicles be registered, insured, and operable.

Alternative: Check with your facility for vehicle storage policies — MTT Storage offers vehicle and boat storage (indoor or out depending on size) with just your license and proof of insurance.

Six boats parked side by side, on boat trailers.

6. Weapons, Ammunition, and Explosives

Why Not: These pose extreme safety hazards and are often prohibited by storage facility policies and local laws.

Alternative: Consider licensed firearm storage options or gun safes at home, following all local laws.

7. Cash or High-Value Items (Jewelry, Collectibles)

Why Not: While storage units are secure, they are not vaults. For irreplaceable or very high-value items, a bank safe deposit box offers greater protection.

Alternative: Keep such items in a more secure, access-controlled location.

8. Scented or Aromatic Items

Includes: Candles, potpourri, incense, or air fresheners.

Why Not: Strong scents can attract pests and may permeate other items over time.

Alternative: Avoid storing strongly scented items, especially in non-climate-controlled units.

9. Electronics in Non-Climate-Controlled Units

Why Not: Temperature swings and humidity can ruin electronics, causing corrosion or cracking screens.

Alternative: If you plan to store electronics like TVs, computers, or audio gear store them at home where the temperature can be regulated.

10. Wet or Damp Items

Why Not: Moisture leads to mold, mildew, and rust — and it can spread to other items in the unit.

Alternative: Always thoroughly dry items before storing, especially things like appliances, towels, or outdoor gear.

Conclusion

While self-storage is incredibly versatile, being aware of what not to store ensures the safety of your belongings — and everyone else’s. If you’re ever in doubt, talk to your storage facility team. At MTT Storage, our friendly staff is happy to help you make the right choices for a clean, safe, and hassle-free storage experience.

Need safe and secure storage in Cheshire County, NH?
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