After a rain shower and a couple of days in my compost, the box started to collapse.
Whole Foods’ deli packages, available at all their stores, did really well in my test, breaking down in about a month in my backyard compost bin. Disclaimer: I’m not a really dedicated composter (some people get science-y and keep track of oxygen and nitrogen levels and keep their composts at optimum temps for biodegradability.) I just throw my scraps on top, mix them around with some dead leaves and let nature run her course, which means mine is not a perfect system and doesn’t break stuff down as fast as a well-managed bin could turn organic matter to soil. But I get great compost from it each spring for my garden, and I keep some garbage out of the landfill, which works for me.