Most offices settle on a daily or three-times-a-week clean without ever asking why. It's worth pausing on, because the right frequency depends less on the size of your floor plan and more on how the space actually gets used.

What actually drives the decision

• Headcount and visitor numbers through reception and shared areas
• Whether staff eat at their desks or in a shared kitchen
• How many people share each toilet and basin
• Carpet versus hard floor, and how much of it is walked on daily
• Whether the space is client-facing or internal only

A 40-person office with a busy kitchen and a steady stream of visitors needs a different rhythm to a 15-person back-office team that mostly works from laptops.

A rough starting point

Daily cleaning suits busy, client-facing offices, medical and food-handling spaces, and anywhere with more than about 25 people sharing kitchens and bathrooms. Three visits a week works for mid-sized teams with moderate visitor traffic. A weekly clean is usually enough for small, low-traffic offices, so long as staff handle their own desk and kitchen tidiness between visits.

The honest answer is that a walk-through beats a rule of thumb. That's why we start every quote with a site visit rather than a price based on square metres alone.

“Eco-friendly” on a bottle doesn't mean much on its own. There's no single global standard, and plenty of products lean on the word without independent testing behind it.

What to check for

• Third-party certification, not just a manufacturer's own claim
• Full ingredient disclosure, not just a short list of highlights
• Concentrate formats, since diluting on site cuts packaging and freight significantly
• Whether the certification covers the actual product you're buying, not just the brand's flagship range

Packaging matters as much as the formula. A certified product shipped in single-use bottles every fortnight still generates a lot of plastic. We buy concentrates in bulk and dilute them on site in refillable dispensers, which cuts packaging waste well below what pre-mixed sprays produce.

None of this means compromising on results. Modern eco-certified degreasers and glass cleaners perform close to their conventional equivalents. Where they still fall short, on some heavy-duty jobs, we say so rather than pretending otherwise, and use a targeted conventional product for that one task only.

A post-construction clean isn't a bigger version of a regular office clean. Building sites leave behind adhesive residue, paint overspray, cement dust in places you wouldn't expect, and protective film that someone still has to peel off every pane of glass.

The three stages that actually work

• Rough clean: bulk debris, offcuts and packaging removed so the space is safe to move through
• Detail clean: dust from every horizontal surface, light fitting and vent, adhesive and paint removed from glass and fittings, and floors prepared for their final finish
• Final touch-up: a walk-through once furniture and fixtures are in, catching the marks and fingerprints that show up once the space is actually being used

Skipping straight to a detail clean before the rough clean is done usually means redoing work, since settled dust just gets stirred up again.

What's easy to miss

Air vents and light fittings hold construction dust long after the floors look clean, and it drifts back down within days if it isn't removed at the source. Window tracks, door hardware and the underside of countertops are the other places we check twice before signing off a handover.

The same cloth used on a toilet bowl and then a kitchen bench is how bacteria moves between the two, even when both surfaces end up looking clean. Colour-coding removes the judgement call: red never goes near a kitchen, and green never touches a toilet.

The system we run

• Red: toilets and urinals only
• Yellow: basins, mirrors and general washroom surfaces
• Blue: offices, desks and general surfaces
• Green: kitchens and food preparation areas

It sounds almost too simple to matter, but it's standard practice in healthcare and aged care for good reason. Cleaning staff can move fast through a site without stopping to think about which cloth is safe to use where, because the colour already answers the question.

We run the same four colours on every contract, from a 20-person office to a childcare centre, so the standard doesn't quietly slip on smaller jobs.

Foot traffic that's good for sales is hard on floors, fitting rooms and entrances. The stores that hold their presentation through a busy trading period usually aren't cleaning more often out of luck, they've planned for it.

Where the wear shows first

• Entrance mats and the first few metres of floor inside the door
• Fitting room mirrors, hooks and floors
• Till points and EFTPOS terminals
• Shelf edges and product at hand height

Scheduling a scrub of hard floors before opening, rather than after close, matters more than it sounds. Floors that are cleaned overnight but not properly dried can be more of a slip hazard by mid-morning than floors left one day longer between cleans.

For seasonal peaks, we usually add a midday touch-up round on top of the regular before-open clean, focused on entrances, fitting rooms and till points rather than a full reclean of the store.

Most commercial cleaning quotes look similar on paper. The differences that matter usually only show up after something goes wrong, which is the wrong time to find out. These are the questions worth asking first.

• Are your cleaners police-checked, and can you show proof?
• What's your public liability insurance, and does it cover damage to our equipment?
• Will we have a named supervisor, or a rotating pool of contacts?
• What's the checklist for our specific site, in writing?
• How often is quality actually inspected, and do we see the results?
• What's included in the quoted price, and what counts as an extra?
• How are keys and alarm codes stored and tracked?
• What's the notice period if either side wants to end the contract?
• What happens if a cleaner calls in sick, does the job still get done that day?

A supplier who answers all nine without hesitation is usually one who's set up to run this properly rather than one who's hoping you never ask. We put our answers to all of these in writing before a contract starts, because a good relationship shouldn't depend on nobody bringing it up.