5 Things You Should Never Store: Avoid These Common Mistakes in 2025

Published on 1/21/2025
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Self-storage units are an excellent solution for decluttering, storing seasonal items, or securing valuables during a move or renovation. However, not everything belongs in a storage unit. Whether you’re a first-time renter or a seasoned storage pro, it’s important to know which items are better left out. Storing the wrong things can lead to damaged belongings, safety hazards, or even legal trouble. Here are five items you should never store in your self-storage unit and why avoiding these mistakes is crucial in 2025.


1. Perishable Food and Beverages

Perishable items, such as fresh produce, dairy, meat, and beverages, are a definite no-go for storage units. These items spoil quickly, attract pests, and create foul odors that can affect neighboring storage units. Even sealed or canned goods can be problematic if they’re stored for too long in non-climate-controlled environments.

Why It’s a Problem in 2025:

  • Pest Infestations: Rats, mice, cockroaches, and other pests are drawn to food. Once they invade, they can damage other belongings and spread throughout the storage facility.

  • Health Risks: Mold and bacteria from spoiled food can create serious health hazards for anyone accessing the unit.

  • Facility Regulations: Many storage facilities have strict policies against storing perishables due to these risks.

Alternative Solution: Donate non-expired, unopened food items to local food banks or keep them in your pantry at home. For longer-term food storage, consider investing in specialized freeze-dried or vacuum-sealed food storage systems designed for emergencies.


2. Hazardous Materials

Storing hazardous or flammable materials like gasoline, propane, chemicals, fireworks, paint, and explosives is not only dangerous but also illegal in most storage facilities. These items can cause fires, explosions, or toxic spills, putting other renters and the facility at risk.

Why It’s a Problem in 2025:

  • Environmental Concerns: With increasing regulations and awareness around environmental safety, improper storage of hazardous materials can lead to significant fines or legal action.

  • Safety Risks: Combustible materials can ignite under high temperatures, especially in non-climate-controlled units during hot summers.

  • Insurance Issues: Most storage insurance policies won’t cover damages caused by hazardous materials, leaving you financially responsible.

Alternative Solution: Store hazardous materials in appropriate facilities or dispose of them at designated hazardous waste disposal sites. Check local regulations for safe handling and disposal practices.


3. Valuable and Irreplaceable Items

While storage units are generally secure, they aren’t completely immune to theft, damage, or natural disasters. Items like expensive jewelry, rare collectibles, important documents, and family heirlooms should be kept in more secure locations.

Why It’s a Problem in 2025:

  • Security Breaches: Despite advancements in surveillance and locking systems, no facility can guarantee 100% protection against break-ins.

  • Environmental Risks: Floods, fires, or extreme temperatures can damage sensitive or valuable items if stored improperly.

  • Emotional Loss: Losing irreplaceable items like wedding albums or family heirlooms can have a lasting emotional impact.

Alternative Solution: Use a safety deposit box or a home safe with fireproof and waterproof features for high-value or irreplaceable items. For digital assets, consider secure cloud storage or encrypted drives.


4. Living Plants and Animals

It may seem obvious, but living things—whether plants or animals—should never be placed in storage units. Plants require sunlight, water, and proper ventilation to survive, and animals need food, water, and humane care.

Why It’s a Problem in 2025:

  • Animal Cruelty Laws: Storing live animals is not only unethical but also illegal. Violators can face severe legal consequences.

  • Plant Decay: Without proper care, plants quickly wilt, rot, and attract pests, causing damage to your belongings and creating sanitation issues.

  • Facility Damage: The decomposition of plants or waste from animals can lead to odors, mold, and structural damage within the unit.

Alternative Solution: Rehome pets or arrange temporary care with friends, family, or professional pet boarding services. For plants, consider gifting them to someone who can care for them while you’re unable to.


5. Illegal or Prohibited Items

Items that are illegal to possess, transport, or store—such as illicit drugs, unregistered firearms, or stolen goods—should never be placed in a storage unit. Doing so not only violates storage facility policies but also puts you at risk of serious legal consequences.

Why It’s a Problem in 2025:

  • Increased Surveillance: With advancements in technology, storage facilities are increasingly using AI-powered surveillance and monitoring systems, making it harder to hide prohibited items.

  • Legal Consequences: Law enforcement agencies work closely with storage facilities to crack down on illegal activities, leading to possible arrests and confiscation of your unit.

  • Facility Policies: If a prohibited item is discovered, the facility may terminate your rental agreement and charge additional fees for cleanup or legal actions.

Alternative Solution: Avoid engaging in illegal activities altogether. For legal firearms or restricted items, follow proper storage protocols as outlined by local and federal laws.


Bonus Tips to Avoid Common Storage Mistakes in 2025

Choose the Right Unit Type

With advancements in self-storage technology, facilities now offer climate-controlled units, humidity-regulated spaces, and even smart units with remote monitoring. Assess your storage needs and choose a unit that matches your requirements to prevent damage.

Label and Organize Your Belongings

Properly labeling and organizing your stored items can save time and prevent accidental storage of restricted or prohibited items. Use clear, waterproof labels and create an inventory list for easy access.

Read the Fine Print

Every storage facility has its own rules and restrictions. Before signing a rental agreement, review the prohibited items list to ensure compliance and avoid penalties.


FAQs About What Not to Store in a Self-Storage Unit

Q: Can I store alcohol in my storage unit?

A: While alcohol isn’t necessarily illegal to store, it’s often discouraged due to the potential for leaks, temperature sensitivity, and facility regulations. Always check with your storage provider.

Q: Are batteries safe to store in a unit?

A: Batteries, especially lithium-ion types, can pose a fire risk if stored improperly. It’s best to avoid storing them in units without climate control.

Q: Can I store my pet’s supplies in a unit?

A: Yes, pet supplies like bedding, toys, and unopened food can usually be stored, but ensure the food is sealed and within expiration dates to avoid attracting pests.

Q: What happens if I store prohibited items?

A: If prohibited items are discovered, the facility may terminate your rental agreement, impose fines, and even involve law enforcement depending on the severity of the violation.

Q: How do I know if something is safe to store?

A: Consult your storage facility’s guidelines or speak with the management team. When in doubt, err on the side of caution and look for alternative storage solutions.