Every October we get the same call from Michigan office managers: half the team is out, the other half is coughing, and someone wants to know whether the cleaning crew can “do something about it.” The answer is yes, but probably not the thing most people expect. Fogging the office once in November does very little. What actually moves the needle is boring, repeatable, and focused on about a dozen surfaces.
Here is how we approach cold and flu season for our daily janitorial clients across Detroit, Warren, Troy, Livonia, and the rest of our service area.
Michigan’s respiratory season is longer than you think
Nationally, flu activity typically picks up in October, peaks between December and February, and can run into May. In Michigan that window is effectively longer, because our buildings close up early. From late October through March, most offices are running sealed windows and recirculated furnace air, and staff are spending their whole day indoors. Whatever is on a shared surface stays in play longer than it would in a building that gets fresh air.
Practically, that means the disinfection schedule should tighten in October, not in January after the first outbreak.
Cleaning and disinfecting are two different steps
This is the distinction that gets collapsed most often, including by cleaning companies that should know better.
Cleaning removes soil, dust, and organic matter with detergent and friction. Disinfecting kills what remains, using an EPA-registered product left on the surface long enough to work. You cannot skip the first step and get the benefit of the second — disinfectant applied over a layer of grime is largely wasted, because it binds to the soil instead of the pathogen.
The step almost everyone gets wrong is dwell time. Every disinfectant has a required contact time on its label, usually somewhere between 30 seconds and 10 minutes, and the surface has to stay visibly wet for that whole period. Spraying a desk and immediately wiping it dry is not disinfection. It is a damp wipe with extra chemical cost. When you are evaluating a janitorial provider, ask what product they use and what its dwell time is. If they cannot answer, that tells you something.
The high-touch surfaces that actually matter
Respiratory viruses spread mostly through the air, but shared-surface transmission is the part a cleaning program can genuinely control. Prioritize these, daily, during season:
- Door hardware — entry handles, interior levers, restroom push plates, and the crash bars everyone leans on.
- Break room fixtures — refrigerator and microwave handles, coffee machine buttons, water cooler taps, cabinet pulls, and the communal sink faucet. The break room is consistently the highest-risk room in an office and the one most often given a quick pass.
- Shared electronics — conference room phones and remotes, copier and printer touchpads, badge readers, shared keyboards and mice at hot desks, and check-in tablets.
- Restrooms end to end — not just fixtures, but dispensers, stall latches, and the light switch on the way out.
- Elevator buttons, stair rails, and light switches throughout the floor.
- Reception and lobby — the sign-in counter, pens, seating arms, and door handles that every visitor touches on the way in.
Individual desks matter less than people assume when they are single-occupancy. Hot desks and shared workstations are a different story and should be disinfected between users, or at minimum nightly.
A schedule that holds up
Consistency beats intensity. A documented daily checklist run reliably outperforms a dramatic quarterly deep clean every time.
- Daily, October through March: full high-touch pass, restrooms, break room, and trash. Two passes a day if you are customer-facing or over roughly 40 staff.
- Weekly: interior glass, partition and door edges, chair arms and fabric touchpoints, floors detailed to the edges.
- Monthly: vents and returns, ceiling corners, upholstery, and behind and beneath furniture — the dust reservoirs your furnace redistributes every time it kicks on.
- After an outbreak: a targeted deep clean of the affected area with extended dwell time, ideally after hours so the space can stay wet and then air out.
What your team needs to do
No janitorial program compensates for an office culture that rewards showing up sick. The cleaning side is roughly half the equation. The other half is stocked soap and paper towels in every restroom, hand sanitizer at reception and in the break room, tissues at desks, a genuine stay-home norm, and clearing personal clutter off desks so surfaces can actually be wiped. Our crews will work around a stack of files, but we cannot disinfect underneath it.
A note on eco-friendly and disinfection together
Business owners sometimes assume they have to choose between green products and real disinfection. They do not. The EPA maintains registered disinfectants that meet the Safer Choice criteria, and those are what we use — effective against the pathogens that circulate in offices, without leaving staff with headaches or triggering asthma in a sealed winter building. Harsh does not mean effective. Registered and correctly applied does.
Get a quote
Sparkle Pro Cleaning is a bonded and insured team using EPA-certified, eco-friendly products that are safe around staff, clients, and families. We provide standard cleaning, deep cleaning, move in/out cleaning, and daily janitorial services across Detroit, Grand Rapids, Warren, Sterling Heights, Ann Arbor, Lansing, Dearborn, Livonia, Troy, and Westland.
If you want your office on a tighter schedule before flu season peaks, now is the time to set it up. Call (954) 417-6793 or email sales@sparkleprocleaning.co for a free walkthrough and quote. Budgeting first? See our 2026 Michigan commercial cleaning cost guide.