I have no realistic expectation of keeping the virus out of our house forever.
Victorian terraces are not set up for social distancing, or handwashing near the front door, and Mr B has a job with high public exposure, and consequently likely high virus exposure. He keeps out of the mess room, wipes his equipment down with disinfectant wipes, attempts social distance where possible, thoroughly washes hands before leaving work and once home, changes immediately and does his own laundry. But keeping it out completely is simply a pipe dream with his job.
We wipe the wheelie bin handles, but no one touches the door handles except us, and we wash hands after.
Having read up on virus survival on packaging, And considering the above, I feel no need to sanitise food items entering the house. If I go into a shop I wear a mask, since I could easily have picked the virus up from Mr B and be risking passing it asymptomatically.
My preference would actually be to get the virus as soon as possible, avoid passing it on to anyone else, recover, be tested for antibodies, and then be in a better position to help out older family members than currently.
There is plenty of contradictory ‘evidence’ all over the place declaring that I am simultaneously high risk, low risk, and anything in between. Age, insulin resistance, co-morbidities, HbA1c, standard deviation, etc. etc. all factor in.
The way I see it, I may have had it already (sore throat/cough several weeks ago), and will definitely be exposed to it sooner or later, unless I totally isolate for the next 2 years (or longer). So I would rather focus on good nutrition, a strong immune system, a very low standard deviation and the best HbA1c I can manage, so that COVID-19 when/if it hits, is as mild as possible.
My compliance with government guidelines on social distancing it to protect others, not myself.