We debate, you decide.
One of us thinks that when you take the empty canning jars back down to the basement to store them until the next canning season, it is better to store them upside-down, thus preventing creepy spiders from crawling in and meeting their doom.
Note the fact that this will also prevent anyone from having to PICK UP A JAR FULL OF SPIDER CARCASSES to wash it out before the next use.
The other person thinks they would rather store the jar right-side-up. Yes, you have to wash out the spider remains. BUT AT LEAST YOU KNOW WHERE THE SPIDERS ARE.
Upside-down? or Right-side-up?