Does raising speaker cables off the floor really make a big difference?

I’ve  been an audiophile for 30 years and I don’t hear a difference at all.
That said, I still raise them off the floor because I know there is static electricity on the floor. (Especially in the dry winter months)
My OCD is at ease knowing the cables are safe!!!!!

I use a couple of 1” round rubber grommets under them. (Can be found at any hardware store) I drilled a small hole through them and tie wrapped them to the cable so they don’t move. 
I use custom length 6 foot Transparent “Ultra” cables. ($3600.00). 
Don’t listen to anyone,,,,,,,,just listen!!!!!!!! Let your own ears be the judge. Or just do it if you have OCD like me!!!!!

Does this mostly apply to carpeted floors?

cables create a magnetic cables create a magnetic field carpeting and cables static electricity, off the floor there is no potential conduction or attraction ..
i have been using them for years
power cords also for they carry much more current youcan just cut blocks of wood and cut a notch into it.

People! Let’s not forget the vibration transmitted by the floor to the cables. Has anyone tried springs under cables or power cords? Hmmmmmm

Lots of things in this hobby are invisible! - magnetic fields, electric fields, vibration, acoustic waves, electromagnetic waves, RFI/EMI.

Pop quiz: why does external vibration affect the audio signal in cables? Free prize to first correct answer.