To: tjjunk.
I have installed Electrostatic Dissipation (ESD) mats on the floor in front of my equipment racks to mitigate the charge. The units I purchased are not tethered. I find that going barefoot completely eliminates the problem. Wearing cotton socks in cooler weather is 90% effective. My music listening room has quality Berber carpeting on a thick pad placed over 3/4" plywood. The plywood (second) floor is "glue and screw" and sealed, eliminating squeaks and significantly helping seepage of noise from outside and the first floor.
The ESD mats are 3'x5', and the price was $100 each. Colors are black, grey, and blue. As an aside, I honestly can say my body generates a significant amount of static electricity. [Perhaps it is attributable to 33 years working on irradiated nosetips on ICBMs and spacecraft. ]