The Fellowship of the Ping

I live in the southern US, and my house basically has this built-in. There’s a big fan in the middle of the house that blows air into the attic, so if you open a few windows and flip the fan on it creates a breeze through the whole house.

Make sure your sewer traps haven’t dried up though. I turned it on with the house closed up one day and it sucked in air through the shower drain in the guest bathroom that hadn’t been used in a while…

I was also thinking zero. I picture a straw as a rectangular piece of material that’s been curled to form a cylinder, and in my mind that rectangle has no holes in it. I was confused when I saw that the options were only one or two.