Treadmills Should Have Spittons

I wouldn't call it an attractive habit. But it's a fact of life for running and biking. Not a problem when you're outside.
God I'm so used to spitting at will when I'm outside, when I come inside and do a hard treadmill workout I don't know what to do with myself.

What I did end up doing is grabbing some paper towels and dropping some saliva in there every once in a while. Once that got really nasty the bottle holder served as a free target. I was looking for a plastic cup, but there was nothing around.
Just to be clear I did make sure the treadmill got a serious wipe down once I was done. Gross right?