How to Clean a Self-Storage Unit | Billabong Self Storage

To clean a self-storage unit effectively, empty it completely so you can reach every corner.

Sweep the floor, wipe down the walls to remove dust, scrub any scuffs or stains, and treat mould or mildew with a designated cleaner. Then let the unit fully air out before repacking.

It sounds simple, and it is.

Why Cleaning Your Storage Unit Matters

Cleanliness is about more than hygiene. It protects your belongings.

Accumulated dirt and grime can damage your possessions, trapped moisture leads to mould, and even a dry unit gathers dust over time. Regular cleaning also prevents pest infestations before they start.

There is a practical payoff too. A clean, organised unit keeps your stored items easily accessible, with no digging through clutter to find what you need.

How Often Should You Clean Your Storage Unit?

Storage units do not need constant attention. Bring cleaning supplies with you on regular visits and do a quick sweep or vacuum for general upkeep, and conduct regular inspections for pests and damage while you are there.

Then schedule a deep clean at least once a year. For most units, this only takes a few hours, though a larger unit packed with belongings will naturally take longer, so plan your visit accordingly and rope in some help if you need it.

Gather Your Cleaning Supplies

Collect everything before you start so the job runs smoothly:

Cleaning equipment: broom, dustpan, mop and bucket.
Cleaning solutions: a multi-surface cleaner, glass cleaner and a mould or mildew remover (a vinegar and water mix works too). Baking soda is handy for neutralising musty odours.
Clothes and protective gear: microfiber cloths, paper towels, heavy-duty gloves and a face mask to guard against dust.
Sorting materials: trash bags, spare boxes, industrial plastic wrap, sturdy plastic bins and pallets.

If you prefer natural cleaning products, they lower the health risks that come with harsher chemicals.

Empty the Unit and Start Sorting

Before any scrubbing, remove everything from the unit. As you carry things out, inspect each box and item for mould, dust or damage, so nothing dirty goes back into a clean space.

This is also the perfect time to declutter:

Sort items into three categories: keep, sell and donate. Anything broken can go in the trash or be recycled.
Be honest about valuable items versus dead weight. If something has sat untouched for years, let it go.
Create an inventory and label items and boxes as you sort, which makes everything easier to find later.
Break the process into manageable sections and set a realistic timeline rather than rushing.

For larger items you need to dispose of, consider renting a skip so everything goes in one trip rather than several.

Deep Cleaning Your Storage Unit Step by Step

With the unit empty, work through it methodically:

Dust from the top down. Use a long-handled broom or duster to clear spiderwebs and dust from the ceiling, high walls and the rolling door track, so settled dust is not disturbed onto cleaned surfaces.
Sweep the floor. Work from the back corners of the unit towards the door, collecting all the dust and debris as you go.
Wipe down surfaces. If your unit has shelves or flat metal surfaces, wipe them with a multi-surface cleaner and microfiber cloths.
Scrub and mop the floor. Treat any stains, grease or spills with a heavy-duty floor cleaner, then mop with disinfectant. Always check product labels, as some need time to work while others should be scrubbed immediately.
Rinse if needed. Many facilities have a hose nearby for washing away chemical residue.
Ventilate. Leave the door open for 20 to 30 minutes. The fresh air circulation eliminates musty smells and dries the space completely.

If you are ending your rental rather than repacking, finish with a final inspection alongside the facility manager.

Safety Tips for Cleaning Your Unit

Cleaning a unit is not dangerous work, but a few precautions prevent the common mishaps:

Heavy objects: wear gloves and enclosed shoes when shifting big containers, and ask a friend or family member to help lift anything awkward.
Trip hazards: keep walkways clear of scattered boxes, and watch for wet patches on the floor while mopping.
Chemicals: protect your skin, eyes and mouth with goggles, a mask and long sleeves when using cleaning sprays.

Returning Your Belongings the Smart Way

Once the unit is spotless, the way you store items determines how long it stays that way.

Repack strategically with these habits:

Place wooden or plastic pallets on the concrete floor to lift everything off the ground and prevent moisture damage.
Use airtight plastic containers instead of cardboard boxes where possible, as they keep out moisture and dust far better. Avoid plastic garbage bags for storage, especially for clothes, as they trap humidity.
Wrap furniture and mattresses in industrial plastic wrap to keep dust and pests out.
Add moisture absorbers to control humidity, particularly around delicate items like electronics.
Install sturdy shelving to use your vertical space effectively, and group similar items together for quick retrieval.
Leave a clear aisle through the middle of the available space so the rest of the unit stays reachable, then lock up.

For more advice on packing a unit well, see our storage tips.

Need More Help? Contact Billabong Self Storage Today!

A clean unit starts with a quality storage facility. At Billabong Self Storage, our purpose-built storage units in Jandakot and Gnangara are kept clean, dry and secure, with a range of sizes to suit every need.

We also offer flexible rental options, so you are never stuck in a long-term contract you do not want.