The 1891 patent for the toilet paper roll literally states that the end of the roll should be hanging off the exterior, in other words, it should be placed in the ‘over’ position. … The moment when a toilet user’s hands are most likely to carry bacteria is when they reach for toilet paper.
In this manner, how long does toilet paper last for one person?
Now it’s time to do some math. Based on the answer to the last question, one person may go through eight rolls of toilet paper per month. This means that 30 rolls should last one person 15 weeks, which is a little over three and a half months.
Also question is, which way should toilet roll holder face?