That's a good idea, and we've done that.
But consider this:
- You drive into the garage.
- You put you hand on the handle to open the car door.
- You put your hand on the car door to close it
- You put your hand on the doorknob of the door to the house.
- You put your hand on the doorknob of the door to the bathroom.
- You put your hand on the faucet control.
IOW, you have five surfaces that could hold the virus, plus the surfaces of the things you brought into the house.
I guess you could go back and spray/disinfect those surfaces.