The COVID-19 pandemic raised concerns about virus transmission, including through contact with contaminated surfaces. Car interiors, as confined spaces, present unique considerations for how long SARS-CoV-2 remains viable and how to clean these environments. Understanding the virus’s persistence on car surfaces and implementing appropriate cleaning protocols can help reduce potential risks.
Virus Survival on Car Surfaces
The duration SARS-CoV-2 remains viable on car surfaces depends on material type, temperature, and humidity. Viruses generally survive longer on non-porous surfaces than porous ones. Studies indicate the virus can persist on plastic and stainless steel, common materials found in car dashboards and door handles, for up to two to three days. Fabric surfaces, such as car seats and headrests, typically see shorter survival, usually 24 to 48 hours. Leather surfaces may harbor the virus for up to five days, while glass, often found in windows and interior mirrors, can see survival for around four days.
Environmental conditions significantly influence how long the virus remains active. Higher temperatures can reduce survival time; temperatures above 72 degrees Fahrenheit can limit viability to as little as 5 to 30 minutes. Humidity also plays a role: very low humidity might cause droplets to dry quickly, while high humidity can prolong survival. Exposure to ultraviolet (UV) light, such as direct sunlight, can also inactivate the virus more rapidly.
Effective Car Cleaning and Disinfection
Regularly cleaning and disinfecting car interiors can help mitigate surface transmission risk. Begin by wearing disposable gloves during the cleaning process. Focus on high-touch surfaces within the vehicle, including the steering wheel, door handles, gear shifter, buttons, touchscreens, and seatbelt buckles. The steering wheel often accumulates many germs, making it a key area for cleaning.
For most car interior surfaces, a simple soap and water solution effectively breaks down the virus’s lipid membrane. Alcohol-based solutions with at least 70% alcohol are also recommended for their efficacy against coronaviruses and can be used on many surfaces. When using disinfectants, ensure the surface remains visibly wet for several minutes, as indicated by product instructions. Using microfiber cloths is advisable to clean surfaces without causing scratches.
Certain cleaning agents should be avoided to prevent damage to car materials. Bleach, hydrogen peroxide, and ammonia-based cleaners can harm vinyl, plastics, and sensitive touchscreens, potentially causing discoloration or degradation. Always test any new cleaning product on an inconspicuous area first to ensure compatibility. Maintain good ventilation by opening car doors or windows during cleaning. When cleaning child car seats, consult the manufacturer’s instructions, as harsh chemicals can compromise the seat’s integrity and flame retardancy.