JMO
From what we have learned so far, the virus can live on surfaces for a limited period of time. The problem is we (and they) really dont know for sure right now until they do extensive studies on the surface survival for Coronavirus, but they are basing their answer to that question on other Flu type viruses of which they have studied that extensively, and the general answer IMO is that this new virus can survive on surfaces for anywhere from 1-7 days or even more depending on the texture, temperature, etc of the surface, so it varies quite a bit, but they also have said, it should normally die off in the first few days.
So, how I am taking that news is that so long as I wipe down the main contact surfaces in the home like refrigerator handles, door knobs, remote controls, oven handles, and any other commonly touched areas, then anything i miss will hopefully die off in a few days.
With that said, if I am getting delivery boxes from anywhere at this point, I will wear gloves to open the box, remove its contents and leave the box outside for garbage pickup. As far as touching the contents, I may even spray it with a disenfectant if I need it immediately or I will let the contents sit for about 5-7 days or more if I dont need it right away.
Hope this helps. Its just my understanding about surface exposure and this virus. JMO of course.