There's some really helpful tips in this video from You Tuber Jeffrey VanWingen. The virus can live on surfaces for up to three days. Some of his suggestions...
Leave non-perishable items in your garage for three days.
Do not pick up items in the store you don't intend on buying.
Clean off groceries upon bringing them home as others most likely have touched them.
Now is not the time for re-usable bags. Use the disposable plastic bags.