Bottoms Up

We have a fairly large house which is needed to stuff all of our kids into. There are lots of bedrooms which is fine and I only clean mine and those of kids under age 6 (which presently is only 2). Everyone else is on their own.
The issue continues to be with the bathrooms. Keeping them clean is not too bad. I clean bathrooms that the boys use every other day and girls bathrooms less often. I never wash a shower curtain. When the mold is noticible I buy a new one.
The issue is running out of toilet paper.
I buy the largest Charmin pack they make at Costco. The 24 pack that "is like 48" rolls because each roll is double the normal size. The stuff is thick! My friend Joanne's husband swears it'll clog up the septic system.... it's that thick. The package is so huge it doesn't fit under the shopping cart and I knock things off shelves as I weild it through the store. It should last for about 20 years or so. Or at least a week at our house. The rolls start to dwindle and the manuvering starts. Someone steals the roll from the guest bathroom. Then the downstairs bathroom rolls dissapear. I sneak in and steal the roll from the girls bathroom for our bedroom. Only the boys don't play this game. They basically don't care if they have a roll at all. That scares me. I could buy 4 of the mega rolls and I still wait till we're down to tissues before I go back to Costco for more. Do they make a hundred pack that "is like 200?"