How to Clean a Home After a Stomach Virus

Why this matters

The call comes the morning after: the whole house has had a stomach bug and the client wants it gone. Most of the time that bug is norovirus, and norovirus is the reason this is its own job. It survives on surfaces for days, a tiny dose makes a person sick, and it shrugs off many of the disinfectants on a typical cleaning cart, including many everyday quats and alcohol products whose labels never claim it. A crew that runs its standard clean with its standard bottle leaves the house looking spotless and still infectious, and the crew members themselves are the next likely cases. What works is three things done in order: remove the gross matter without spreading it, clean, then disinfect with a product whose label claims norovirus, held wet for the full contact time.

Before you go: the call, the crew, the products

Ask the client three questions on the phone. When did the last person stop having symptoms? Where were the incidents (which rooms, which surfaces, any carpet or upholstery)? Is there any visible blood in vomit or stool? The first sets expectations, since people can shed the virus for a time after they feel better and the household can re-contaminate surfaces. The second sizes the job and flags soft surfaces you will route rather than treat. The third decides whether bloodborne-pathogen procedures apply, below.

Crew. Nobody works this job within 48 hours of their own last vomiting or diarrhea, and nobody works it who feels unwell. A sick cleaner is how one household becomes the next household.

The product decides whether the job works. Read the label of everything you plan to use for disinfection and confirm it lists norovirus, with the dilution and the contact time for it. EPA keeps a list of registered products with norovirus claims (List G), and the label of the specific product in your hand is the instruction. Two common routes:

• A registered disinfectant whose label lists norovirus, at that claim's dilution and contact time. Some quat blends, hydrogen peroxide products and others carry the claim; many quats do not. Check, do not assume your usual bottle qualifies.
• Chlorine bleach mixed to the bleach label's own norovirus instruction, for hard, nonporous surfaces that tolerate bleach. Use only a bleach jug whose label carries disinfection directions, mix fresh on site because diluted bleach loses strength, and copy the dilution and contact time onto the spray bottle label per 'Dilution Control and Labeling Standard'. Bleach is never mixed with, or used back to back on the same surface with, ammonia or any acid, including an acid toilet bowl cleaner; the gases are covered in 'Mixing Cleaners and the Gases They Make'.

Bleach discolors fabric, pits stainless steel and some metals with repeated use, and can damage natural stone and some plastics. Plan which surfaces get bleach and which get the registered product before you arrive.

PPE. Disposable nitrile gloves (double-gloved for the gross-matter step), splash goggles or a face shield, a disposable fluid-resistant apron or gown, and shoe covers you can strip at the door. A fluid-resistant face mask protects the nose and mouth from splash while you handle vomit. If the shop requires respirators for this work, that use runs under a written respiratory protection program per 29 CFR 1910.134; even voluntary use of a filtering facepiece calls for the standard's Appendix D information. Read the SDS section 8 for each chemical.

If there is visible blood. Vomit and stool are not treated as potentially infectious materials under the bloodborne pathogens standard unless they contain visible blood. If they do, the job runs under 'OSHA Bloodborne Pathogen Compliance for Cleaning Services', 29 CFR 1910.1030, for trained and vaccinated-or-declined staff only.

The procedure

1. Contain and remove gross matter first. Ventilate the room, then cover any vomit or stool with disposable absorbent towels or an absorbent powder, let it soak up, and scoop it from the edges inward with a disposable scraper or card into a plastic bag. Do not vacuum it or sweep it: both throw particles into the air. Wipe the area once more with disposable towels, bag everything, and close the bag. Strip your outer gloves into it and put a fresh outer pair on. Why first: the gross matter is where nearly all the virus is, and every later step spreads it if it is still there.

2. Clean the incident area, then disinfect it. With the bulk gone, clean the surface with detergent and water and disposable cloths to remove the remaining film, then apply the norovirus-claimed disinfectant and keep it visibly wet for the label's full contact time, re-applying if it starts to dry. Why clean first: soil left on the surface shields the virus and consumes the disinfectant. Skip it and you have sprayed disinfectant onto a residue that protects exactly what you are trying to kill.

3. Bathrooms next, then high-touch points, house-wide. The sick person's bathroom carries the heaviest load: toilet (handle, seat both sides, lid, the bowl exterior and base, the floor around it to a wide margin), sink and faucet handles, the light switch, the door handle on both sides, towel bars and the tub or shower controls. Then work the high-touch list in every room, below. Clean then disinfect each surface, holding contact time. Why this order: the household is still using these surfaces, and they are the ones that carry virus from one person's hands to the next person's mouth. Getting them done first breaks the chain while you finish the rest.

4. Keep zones separate. Use disposable cloths for the incident areas. In the bathrooms, use disposable cloths or microfiber in the restroom colors from 'Microfiber Laundering and Color Coding', bagged separately for a hot wash. Change outer gloves between bathrooms and between the bathroom and the kitchen. Never carry a cloth or a bucket from a bathroom to a kitchen.

5. Route what you do not treat. Carpet and upholstery with vomit on them get the gross-matter step and then go to a carpet or upholstery cleaning service; bleach on carpet bleaches it, and wiping a fabric does not disinfect it. Bedding and clothing belong to the client's laundry: tell them to handle it without shaking, wash on the hottest setting the fabric allows, and machine dry. Food left out during the illness should be thrown away.

6. Close out the crew. Bag all disposables, close the bags, and put them in the client's outdoor trash. Remove PPE in the order that keeps contaminated outer surfaces away from you: outer gloves, gown or apron, shoe covers, eye protection, mask, inner gloves. Then wash hands with soap and running water for at least 20 seconds. Alcohol hand sanitizer is not a substitute here; CDC guidance notes it works poorly against norovirus. Reusable cloths ride home sealed and get washed hot, separate from other laundry.

The high-touch list

The list is house-specific and you build it on site, but the core is the same every time:

• door handles and lock levers, both sides, and the front door
• light switches and the plate around them
• faucet handles and the sink rim in every bathroom and the kitchen
• toilet flush handle, seat and lid in every bathroom
• refrigerator, freezer, microwave and oven handles
• cabinet pulls the family actually uses (snack cabinet, cup cabinet)
• stair rails and banisters
• remote controls, game controllers and the phone cases the client hands you
• the thermostat, the garage door button, and the trash can lid

Electronics get a disinfectant wipe or a cloth that is damp, never sprayed directly, and only with a product the device maker allows; many tolerate an alcohol-based wipe, but alcohol may not carry a norovirus claim, so for electronics the honest note is "wiped with what the device tolerates" rather than a disinfection claim you cannot support.

Worked example: a family of four, two bathrooms

The client calls on a Wednesday: two children were sick Monday night into Tuesday, the last episode was Tuesday morning, both parents are fine so far. Incidents: the children's bathroom toilet and floor, and the hallway carpet outside that bathroom. No blood. The crew of two arrives Wednesday afternoon.

Products. The shop's everyday quat label does not list norovirus, so it stays on the truck; a neutral detergent does the cleaning in step 2. Disinfection: a bleach jug whose label carries a norovirus instruction, mixed fresh on site to that instruction, for the porcelain, tile, vinyl floor and laminate counters; and a hydrogen peroxide disinfectant whose label lists norovirus, for the stainless refrigerator, stainless sink and the painted door hardware the client did not want bleached. The tech copied each product's norovirus dilution and contact time onto its bottle label before starting.

The run:

STOMACH VIRUS CLEAN - 2 BATH HOME     MIN
-----------------------------------  ---
PPE on; windows open; plan surfaces    10
Hallway carpet: absorb, scoop, bag     10
  (routed to carpet service)
Kids' bath: clean then disinfect,      35
  toilet, sink, floor, door, switch
Main bath: same list                   25
High-touch, 9 groups, whole house      60
  (31 points, clean then disinfect)
Kitchen counters, sink, table          20
Bag out, doff, hand wash, notes        10
-----------------------------------  ---
Total (2 techs, 85 min each)          170

Adding the column: 10 + 10 + 35 + 25 + 60 + 20 + 10 is 170 minutes of tech time, split between two techs at 85 minutes each, so the home was done in under an hour and a half on the clock.

Why the carpet was not treated. It got the gross-matter step only, because neither product on the truck is labeled for carpet and bleach would have left a pale patch. The note sent the client to the carpet cleaning service with what had happened, so that crew could plan their own method.

Why contact time took longer than the wiping. On each surface the disinfectant had to stay visibly wet for the label's time. On the warm, ventilated bathroom floor it began drying early, and the tech re-applied it rather than counting the first application. Verifying contact time is its own card: 'Disinfectant Contact Time Verification'.

What went in the file. "Norovirus-type illness, 2 children, last symptoms Tue AM. Bleach (label norovirus instruction) on porcelain/tile/vinyl/laminate; H2O2 (norovirus claim) on stainless + painted hardware. Hall carpet: gross matter removed only, client referred to carpet cleaner. Bedding: client advised hot wash. Crew: no symptoms; recheck crew health Fri."

What would change the call. If either parent falls ill after the clean, the high-touch list and the bathroom used by the newly sick person need repeating; one clean does not protect a household that is still producing new cases. If the client had wanted the bleach used on a marble vanity, the answer is no: bleach damages marble, and the registered product whose label allows stone is the route. And if any vomit had contained visible blood, the job would have run under the bloodborne pathogens procedures with only trained staff.

How you know it is done

Every incident site had its gross matter removed before anything was sprayed. Every bathroom surface and every item on the high-touch list was cleaned and then held wet with a norovirus-claimed product for its label's contact time, and the file names which product went where. Soft surfaces you did not treat are written down and routed. All waste is bagged and outside, the crew has washed with soap and water, and reusable cloths are sealed for a hot wash.

References

• Disinfectant and bleach labels (norovirus claim, dilution, contact time, surfaces, PPE); EPA List G, registered products effective against norovirus
• CDC guidance on preventing norovirus spread, including cleaning and handwashing
• OSHA 29 CFR 1910.1030, Bloodborne Pathogens; OSHA 29 CFR 1910.134, Respiratory Protection
• See related: OSHA Bloodborne Pathogen Compliance for Cleaning Services
• See related: Disinfectant Contact Time Verification