Probably only though if they are actually scared of it.
My husband works residential construction so he brought me home a piece of very noisy (and sturdy!) Tyvek paper.
I've been doing a lot of ground work with my yearling, Shotgun, for the last few weeks. Before I took these videos, I had it on the ground, held down by a couple wooden poles. That was a wee bit scary, but he followed me right up to it and went across it when asked. Then after that he could bascially care less about it.
"Mom, c'mon. I'm trying to eat. That paper is getting in my way."
"Man. Why did you put that on my head? That is SO in my way."
He's such an easy going guy. Can't wait until he's older to ride!!