We now understand that COVID-19 is spread through exhaling and inhaling viral aerosols but it can also be spread by touch. An infected person not wearing a face covering can cough or sneeze emitting thousands of virus-containing droplets that fall from the air quickly to land on the ground but also on chairs, desktops, counters, and other surfaces to form what are called fomites. If someone touches a viral droplet-contaminated surface or object and then touches their eyes, nose, or mouth, they can infect themselves. Fomite transmission can also take place when an infected person touches their own nose, mouth, or eyes and then touches a door handle, phone, pen, can of food, or other items that are not for their own exclusive use. If we touch a contaminated object and then touch our face, we can get infected. The bottom line: Wash well with soapy water or use an effective hand sanitizer immediately after handling anything that isn't under your exclusive control; don't touch your face (including with gloves on); use gloves in stores and discard them before entering your car or home; and decontaminate items using wipes or sprays containing at least 70% alcohol. Here is a link to the CDC recommendations for disinfecting:
https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/disinfecting-your-home.html
https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/disinfecting-your-home.html