If you’re new to using self storage, you’ve probably wondered at some point: “What can’t I put in self storage?” It’s one of the most common questions first-time customers ask, and for good reason. While self storage is perfect for furniture, household items, business stock, archives and more, there are certain things that can’t be stored for safety, legal and hygiene reasons.

To help you get started with confidence, here’s a simple, beginner-friendly guide to the items you should avoid placing in your storage unit.

1. Perishable Foods and Drinks

It may be tempting to store tins, packets or leftover groceries during a move, but any type of perishable food is a firm no. Items such as:

  • Fresh fruit and vegetables
  • Meat, dairy or frozen food
  • Opened dry goods
  • Drinks that can ferment or spoil

These attract pests and mould, and can quickly cause damage to other belongings in your unit.

2. Plants and Living Organisms

Another common query when people ask “What can’t I put in self storage?” is whether plants are allowed. Unfortunately, the answer is no.

Plants need light, air and water — none of which a storage unit can provide. Storing them will only lead to wilting, rot and potential pest problems. This rule also applies to any living organism (yes, even insects or aquariums).

3. Hazardous or Flammable Materials

For health and safety reasons, anything dangerous, combustible or toxic is strictly prohibited. This includes:

  • Petrol, diesel or oil
  • Paint thinners and cleaning solvents
  • Fireworks
  • Gas canisters or propane tanks
  • Fertilisers, pesticides and chemicals

Even small amounts of these materials can pose a serious risk to the entire storage facility.

4. Illegal Goods

This one might sound obvious, but it still needs stating: anything illegal cannot be stored under any circumstances. Examples include:

  • Stolen goods
  • Counterfeit items
  • Unauthorized or unlicensed firearms
  • Drugs or banned substances

Storage facilities work closely with local authorities and follow strict compliance rules.

5. Cash and High Value Jewellery

While self storage units are extremely secure, they’re not designed to act as a replacement for a safe or bank. If you need to store cash, jewellery or other valuable items, you’re better off using a safety deposit box where your items are insured and protected under tighter conditions.

6. Strong Smelling Items

Anything with a potent smell, such as certain cleaning fluids, pet food, or scented chemicals, can seep into other belongings or attract unwanted pests. Best to avoid these entirely.

7. Unregistered or Untaxed Vehicles

Some (but not all) storage facilities allow the storage of cars, motorbikes and vans, but only if they meet specific requirements. As a general rule:

  • The vehicle must be roadworthy
  • It must be insured
  • It must be fully taxed and legally owned

Non-operational or abandoned vehicles are not allowed.

8. Damp or Mouldy Items

It’s not just about what you can’t store legally, it’s also about what you shouldn’t store for your own benefit. Items already affected by moisture or mould can spread damage to everything else in your unit. Always clean and dry items thoroughly before storing them.

If you’ve ever asked yourself “What can’t I put in self storage?”, the key things to remember are simple:

  • Nothing dangerous
  • Nothing illegal
  • Nothing alive
  • Nothing that can spoil
  • Nothing overly valuable or irreplaceable

When in doubt, always check with the Cookes Storage team – they’ll be happy to guide you before you move anything in.