You can discharge the static on a disc but the question is, how is it getting charged in the first place? And what is it you are hearing when you hear noise on discs cleaned with the Degritter?
I have the following questions:
are you using a fluid in the Degritter other than purified water? You may not be removing the fluid and that could cause issues.
On static, are you on carpeting? With shoes or socks? That will cause a charge. When the record comes out of the Degritter it should be static free. Apart from the feet and friction, how are you handling the discs in sleeving/unsleeving? Some paper liners cause a charge.
I’d try to get to the source of the problem. There are a couple of variables here, implicit in my questions.
On platter mats, an inexpensive option is EAR-Isodamp SD125 which you can order from Michael Percy, one sheet is enough for two mats. They are normally die cut (SME uses this material) but you can cut it carefully with an appropriate blade. It is effective, grippy and a good replacement for a lot of OEM mats. I cannot use a dust cover, so I put a "dead" record on the platter to keep it clean and on my one table which has a bonded mat, I use a lint roller occasionally.

