I don't think the grocery store picks through the bags, but they (or a directly previous step) may break open 'bad' bags, sort them, and place the remaining goo

I don't think the grocery store picks through the bags, but they (or a directly previous step) may break open 'bad' bags, sort them, and place the remaining good potatoes on the plain-air shelf. It's probably stored in a "controlled atmosphere" for some duration before getting to your grocery store. > There was almost complete sprout inhibition, low weight loss and maintenance of a healthy skin for all cultivars stored in 9.4% CO2 with 3.6% O2 at 5°C for 25 weeks. When tubers from this treatment were stored for a further 20 weeks in air at 5°C the skin remained healthy and they did not sprout. https://link.springer.com/article/10.1007/BF02358471 https://link.springer.com/article/10.1007/BF02358471 It's possible that the controlled atmosphere is held as shortly as possible (ie: some of the warehousing is just done at certain temperatures without the gas control).