I don't know if this happens in your house, but it sure does in mine.
You have dinner/lunch/snack whatever.
You have leftovers.
You store them nicely in your fridge with the full intention that one day soon .. you will eat them.
Life goes on. One day runs into the next. Then you can't remember what day you opened it and if it is still safe to eat.
Enter the daysago digital day counter.
The come in either magnetic, suction cap or with a band attached to wrap around products.
Attach to leftovers.
And the counter counts UP, telling you how many days ago you opened suspect food item.
It suits the nerd in me, the gadget freak, and the woman who hates leftovers festering in her fridge!
I got mine from www.jespo.com.au
Service was fast and prompt.