http://www.cnn.com/2016/12/19/health/cat-culture/index.html
An interesting read.
I know our 4 cats have taken control of my wife and my lives.
Particularly when it comes to cleaning litter boxes;
we have several on each floor, including the basement,
seems that i am forever cleaning boxes,
and sweeping/dusting up litter particles that escape the box.
Probably about a third of our trash going to the curb each week is from
scooped cat litter waste in (recycled) plastic grocery bags.
Not very environmentally friendly; almost worse than baby diapers.