My husband and I used to get soup from the Chinese take-out across the street almost every week. But we moved last September, and changed our usual mode of eating well before that. So how old are those plastic tubs? A year, more?
They’re still fine: no cracks, stains or signs of damage. Why? A office mate once scolded me for microwave-heating up leftovers in one of them. He was more concerned about chemicals leaching into my food, but I realized that heating these tubs damaged them, ruining them and sending them to the landfill.
Now I also have a few durable, water-tight plastic containers I bought. These should last for years. But I also use the soup containers with one inalterable rule.
Don’t put them in the microwave