Infectious Disease Disinfection
All surfaces receive full coverage with EPA-registered products for infectious disease disinfection.
See infectious disease disinfectionGet high-touch surfaces cleaned and disinfected in a home, office, rental or shared space in Four by Four after illness or possible exposure. EPA-registered products are used according to their labels.
After illness or possible exposure, COVID-19 and virus disinfection focuses on affected spaces and surfaces touched frequently. The service removes soil, then uses an EPA-registered disinfectant according to its label and observes the complete contact time.
An office, restaurant, school, home, rental property, care setting or another communal space may be covered. Touch points are identified by cleanup technicians. These often include desks, counters, door knobs, switches, shared equipment and bathroom fixtures. Nearby areas also receive consideration if people could contact them as they pass through the property.
You may hear this service described as biohazard remediation, COVID-19 decontamination, infectious disease cleanup, coronavirus cleaning or biohazard decontamination. It differs from routine janitorial work because cleanup crews follow product directions, wear protective equipment and work from a written scope that allows each task to be checked. Remediation is not a substitute for handwashing, building ventilation, fresh air or staying home if you are sick.

For homes, shared properties, rentals, offices and restaurants, the scope can reflect the setting instead of using one approach for every situation.
You receive a record of the product name and labeled contact time, letting you see what was applied and move forward with your plan to reopen.
When you or your loved ones need privacy, technicians can arrive in unmarked vehicles, wear protective gear and respect personal property.
Before work begins, you can verify every room, surface and sensitive material included in the cleaning service. Use a clear scope to compare the tasks listed.
When illness, possible exposure or heavy use by many people creates concern, you may need cleaning that is documented one room at a time. COVID-19 disinfection is especially useful in these common situations:
Stores, gyms and public-facing businesses may need focused cleaning of counters, equipment and other repeated touch points.
After illness is reported or before another approved use, property owners may schedule cleaning for hotels, apartments or short-term rentals.
Treatment of meeting rooms, desks, shared devices, restrooms and break areas can occur before routine use restarts.
Careful cleaning is needed for frequently handled surfaces in bathrooms, shared living spaces, bedrooms and kitchens after someone was ill.
Limit access to the property area first, then gather clear facts about the rooms affected. Before the cleanup team enters, follow these steps:
Call (888) 440-9227Published guides do not show an individual COVID-19 price. Guides publishing comparable infectious disease disinfection costs give figures from $1,000 to $10,000. The specific scope varies with space size, germ type, rooms and surfaces involved, requested air-system work and any request for testing.
These national ranges are taken from published cost guides, rather than a property visit. An on-site assessment determines your property's price, which is explained to you before the cleanup starts.
Ask about cost: (888) 440-9227Coverage is determined by your policy and the reason the service is needed. Never presume that business, homeowners or renters insurance pays for preventive cleaning for coronavirus. If time permits, ask your insurance company before cleaning begins.
Business owners need to check required records, communicable disease terms, deductibles and exclusions with the insurance company before depending on coverage.
An insurance company may consider routine disinfection maintenance instead of a loss covered by the policy. Ask whether your policy treats a documented illness or another event differently.
The lease, the location of the affected area and local rules can shape who arranges cleaning in a rental or common area.
Save your invoice, photos, product list and cleaning scope. Keeping these records supports insurance assistance by showing insurance companies what cleanup you requested and what was completed.
Coronavirus biohazard decontamination uses an ordered, controlled process. It starts with an assessment, then moves through cleaning and disinfection before the last check. Throughout the work, the product label determines the steps and the proper treatment for every surface.
Technicians check the rooms, occupancy history, sensitive materials and high-touch points with you before work starts.
Technicians close or mark the work area when necessary and choose eye protection, gloves and other protective equipment suited to the setting and products.
Dust and visible soil are removed first because dirt can keep disinfectant from reaching the surface evenly.
An EPA-registered disinfectant is applied to compatible surfaces using the label's directions for concentration and coverage.
Following treatment, the surface remains wet for its labeled contact time rather than receiving a quick spray and wipe.
Shared electronic devices, soft items and unfinished wood get material-suitable care, not saturation with a general-purpose spray.
A room-by-room checklist check gives extra attention to shared equipment, fixtures, door pulls and switches.
The completed scope and product details are given to you with directions for drying, airflow and when you may return to the treated area.
Call at any time. A COVID-19 and virus disinfection specialist answers, explains the steps and agrees a start time with you.
The main risks during disinfection come from illness exposure, chemical misuse and incomplete surface coverage. A careful plan limits avoidable contact and serious health risks without claiming that surface cleaning removes every route of transmission.
Cleaners entering a recently occupied room may come near someone who is ill or items that are contaminated. Suitable protective gear and controlled access limit avoidable contact while cleaning takes place.
More chemical is not always safer. People may experience irritation, and finished surfaces, electronics, fabric or wood may be damaged by mixed cleaners, poor ventilation or the wrong product.
Shared tools, remote controls, faucet controls and door plates can easily be overlooked. A room-by-room checklist helps cover the full affected area.
Can you clean it yourself? Routine cleaning may be enough when no one is currently ill and the property has no special exposure concern. For a known illness, delicate surfaces, a sizable shared area or a workplace needing a clear scope, professional cleanup can support label compliance and coverage of important touch points.
Most virus disinfection is surface treatment, not demolition. Hard surfaces are cleaned and disinfected when compatible, while damaged or heavily soiled porous items are assessed separately.

A focused residential visit may take several hours, while a large office or multi-room commercial site can require a longer visit or work in stages. The room count, amount of furniture, surface compatibility and required contact times set the schedule.
| Scene | Typical time on site |
|---|---|
| Focused home area | Often completed during one scheduled visit |
| Several rooms or a small workplace | May require a half day or longer |
| Large or occupied commercial property | Frequently divided into stages based on access |
A room's smell cannot show that COVID-19 or another virus has been removed because these viruses do not produce a confirming odor. Fog, deodorizer or fragrance by itself cannot replace soil removal, complete high-touch coverage and the required disinfectant contact time.
Make a separate plan for air quality and odor instead of treating them as part of surface disinfection. Ventilation can remove product fumes following treatment. Staff at the building can check its filtration settings and outdoor air. When mold, sewage backup, water damage or some other source causes the smell, address it through separate cleanup or restoration services, not additional disinfectant.
The full COVID-19 and virus disinfection guide covers what is cleaned or removed, odor and air quality work, and the rules that apply in Baltimore City.
Read the full COVID-19 and virus disinfection guide
Local housing, population and access details can shape containment, access and cleanup planning.
The nearest listed emergency facility is The Johns Hopkins Hospital, about 1.5 miles away, so medical care remains separate from property cleanup.
Nearby communities include Berea, Belair-Edison, and South Clifton Park, useful geographic references when explaining a property location to a cleanup crew.
Properties within this Baltimore neighborhood may share alleys, entries, or parking, so equipment movement should be planned around nearby residents.
Medical questions belong with a clinician, while surface disinfection follows label directions, including the required wet contact time.
You can ask about cleanup in nearby communities and ZIP codes during the call.
All surfaces receive full coverage with EPA-registered products for infectious disease disinfection.
See infectious disease disinfection
MRSA, C. diff and norovirus cleanup for homes, care settings and gyms.
See mrsa, c. diff and norovirus cleanup
Planning for industrial and commercial biohazard cleanup considers operations and access to the site.
See commercial and industrial biohazard cleanup
Clinics, healthcare facilities and care homes receive biohazard cleanup.
See hospital and healthcare biohazard cleanup
After exposure or injury, workplace biohazard cleanup covers offices and other work sites.
See office and workplace biohazard cleanup
Biohazard cleanup for daycares and schools takes place outside classroom hours.
See school and daycare biohazard cleanup
Biohazard cleanup addresses Airbnb accommodations, hotels and other rental units.
See hotel, airbnb and rental biohazard cleanup
Cleanup treats biohazards on upholstery and carpeting, or removes affected materials safely when needed.
See biohazard carpet and upholstery cleaningCheck whether the wood is sealed and read both the furniture care directions and disinfectant label. After a spot test, you may apply a compatible product to sealed wood. Do not soak delicate or bare wood, which can swell, stain or suffer finish loss. Select a method suitable for the material if the product label does not allow its use there.
When surface type, alcohol concentration and wet contact duration are suitable, the coronavirus responsible for COVID-19 may be inactivated. For hard surfaces, use an EPA-registered product or another product recommended by the surface maker, and follow its label. Keep alcohol spray away from flame and heat, and do not expect a rapid wipe to meet the needed contact time.
Start with rooms and touch points used by the ill person. Restrict access by other people, remove visible soil and follow product labeling to disinfect compatible hard surfaces. Use each suitable fabric's care guidance for washing. A visit from professionals may help when a shared area is large, materials are sensitive or a documented scope is needed for each room.
You can use alcohol-based hand sanitizer to reduce germs on your hands when washing with soap and water is unavailable. Use a product with at least 60 percent alcohol and rub all hand surfaces until dry. Rooms, electronics and furnishings should not be disinfected with hand sanitizer, which is intended for hands. Wash with soap and water when hands are visibly dirty.
Viruses can be biological hazards because they can cause disease. How much risk exists is shaped by the setting, task, route of exposure and virus. Match the approach to disinfection with the hazard present. Protective equipment, access control, cleaning and an appropriate disinfectant all have roles, but no single step replaces the others.
One visit may be enough to finish a focused area in a home. A school, large office or commercial facility could require more time or cleaning in separate stages. Access and room count influence timing along with furnishings, product contact time and sensitive surfaces. Ask for a scope that shows the areas included and any reentry instructions.
You can request respectful, discreet COVID-19 and virus disinfection 24 hours a day, and crews use unmarked vehicles.