Items You Should Never Store in Self Storage

Self-storage units are a fantastic solution for decluttering your home and keeping your belongings secure. However, it’s essential to understand what items should never be placed in a storage unit. In this article, we’ll delve deeper into various categories of items, including dangerous materials, household products, firearms, and even organic items that are best kept away from self storage.

Dangerous Items

Lots of different Oil containers

Safety should always be the top priority when using self storage units. Let’s take a closer look at some items to steer clear of:


Substances like bleach, paint, or propane tanks are strictly forbidden in storage units. Not only can these items leak and damage your possessions, but they can also pose significant health risks. Chemical leaks may lead to contamination and harm both the environment and anyone who comes into contact with them.


Ammunition, fireworks, and other explosive materials should never be stored in self storage units. The risk of accidents and harm is far too great, not to mention that storing explosives is often illegal.

Toxic Waste:

This category encompasses hazardous materials such as asbestos, radioactive substances, and biohazardous materials. Storing these items is not only against the law but also poses severe health and environmental risks. Proper disposal and containment are essential for these substances.

Household Products

Lots of dog food in dog bowl

While it might be tempting to free up space by storing household items, some are better off elsewhere. Here’s what to avoid:


Items like food, plants, and pet food should never be placed in self storage units. These organic materials can quickly rot, attracting pests, and generating unpleasant odours. In addition, rotting food can lead to mold and mildew, which can spread to other items in the unit.

Flammable Items:

Highly flammable materials like petrol, kerosene, or propane cylinders pose a severe fire hazard in storage units. The combination of these materials and confined spaces can result in a disaster. Always keep such items away from your storage unit.


Extreme temperatures in storage units, particularly during the summer and winter, can damage sensitive electronics. High heat can cause components to warp, while extreme cold can lead to condensation and corrosion. It’s best to store electronics in a climate-controlled unit or find alternative storage options.

Firearms and Ammunition

22 caliber firearm with ammunition

In the United Kingdom, it’s important to note that the storage of firearms and ammunition is strictly regulated by law. Unauthorised possession of firearms and ammunition is illegal and can result in severe legal consequences. It’s vital to adhere to all applicable firearm laws and regulations, and always store such items in full compliance with local, regional, and national authorities.

Local Laws:

Always be aware of local laws and regulations concerning firearm storage. Different areas may have specific requirements and restrictions on storing firearms. It’s crucial to ensure that your chosen storage facility complies with these laws.

Proper Storage:

If you decide to store firearms, ensure they are unloaded and stored in a secure, locked case. The case should be inaccessible to others and preferably anchored or secured to prevent theft. It’s also wise to invest in a climate-controlled unit to prevent moisture-related damage to your firearms.

Organic Items

Cockroaches surrounding loads of crumbs and organic matter

Organic items, such as clothing, books, or furniture, may seem harmless, but they are also vulnerable to damage if not stored correctly:

Mould and Mildew:

Organic materials, including fabrics and paper, are highly susceptible to moisture-related damage. Moisture can lead to the growth of mould and mildew, which can destroy your belongings. To prevent this, choose a climate-controlled storage unit, maintain proper ventilation, and use dehumidifiers if necessary.


Pests, like rodents and insects, are attracted to organic matter. They can cause significant damage to your items. To safeguard against infestations, opt for pest control measures, including regularly checking for signs of pests, sealing items in airtight containers, and using rodent repellents.

Valuables and Important Documents

Sentimental photographs and camera

While not inherently dangerous, it’s unwise to store irreplaceable valuables and vital documents in a self-storage unit:

Sentimental Items:

Family heirlooms, photographs, and other sentimental items are irreplaceable. Storing them in a storage unit puts them at risk of theft, damage, or loss. It’s best to keep these items in a more secure location, such as a home safe or with trusted family members.

Important Documents:

Legal documents, birth certificates, passports, and financial records should be stored in a secure, fireproof home safe or a secure bank deposit box. Losing these items can lead to significant hassles and legal complications.


In conclusion, self-storage units are invaluable for freeing up space, but it’s crucial to be selective about what you choose to store. Dangerous items, household products, firearms, organic materials, and valuable or irreplaceable items should be kept elsewhere. 

Always follow the guidelines of your chosen storage facility, be aware of local regulations, and ensure the safety and protection of your stored items.

Ready for a smooth move or secure storage solutions? Contact our professional team – Lee Atkins Removals & Storage today for expert assistance in making your next transition hassle-free.