This is a test of commonsense. Complete the next sentence:

How to treat a foot blister
Cover your blister.
Foot blisters should be covered to reduce irritation and cut back on the risk of infection. Cover your blister with a soft dressing, like gauze or a loose bandage.
If the blister is very sore, cut your dressing into a donut shape and place it around the blister to avoid putting pressure directly on it. Your dressing should be changed each day.