Expired yogurt is not recommended for consumption, but it can be used for cleaning and watering flowers. 1.Cleaning. (1) Scrub the floor: after mixing and diluting expired yogurt with water, sprinkle it directly on the floor and then wipe it with a mop. (2) get rid of ink stains: first wash your clothes with water, then pour expired yogurt mixed with water and gently scrub to get rid of ink stains on your clothes. 2. Watering flowers: for the expiration of a longer period of time, there has been an obvious sour rot flavor can be used to water the flowers. Can be diluted in accordance with the ratio of 1:1 expired yogurt, and then in the middle of the flower soil dug out a small pit, the expired yogurt buried inside, can play a similar role with the fertilizer. Therefore, for expired yogurt used in daily life, there may be unexpected effects.