I often have to resort to prepared food from the local supermarket for a number of consecutive days because my parents are on vacation. This food is sealed in vacuum bags and usually requires 3-5 minutes in the microwave depending on the type of food. The bags need to opened using scissors after they have been heated.
Because of the limited amount of scissors in the house, I often need to resort to reusing one or more scissors for 2 or more days in a row. What precautions should I take to avoid food poisoning?