SME 20/2 Static Electricity

Another joke. Lewm, I'm on your side on this one. Spraying anything on your record is a bad idea and it will not stop the static problem neither will grounded mats. A mat will only discharge one side of the record, the wrong side. There is no magic in this. You have to have a path to ground from the site that the static is being produced. The stylus in the groove. Static electricity is terrible for records because it draws dust like a magnet which you can prove to yourself by holding a record you just played up to a light and you will see dust fly towards the record. The dust can become embedded in the groove and held there so your stylus can grind it into the groove instead of pushing it out of the way. Besides the grounded sweep arm the next best thing for record hygiene is a dust cover. 
By the way take a meter and see if your "grounded mat" is actually conductive. If it is not it would even discharge the side of the record touching it.  

snackeyp, I have a 30/12. I live in New England and as soon as he heat starts running the relative humidity drops like a rock and static charges everywhere become worse. Look up triboelectric series and you will notice that vinyl is way down at the bottom. It loves to hold on to electrons. There are few things that are worse. Aluminum however is in the middle and could care one way or the other. It is a great material to make turntables out of. Transferring electrons requires intimate contact. Rubbing helps a lot. The charge is generated by the stylus rubbing the groove with a force of 5000 PSI. You can create thousands of volts of static electricity playing just one side. If the charge has no where to go the record will hold on to it forever. 
The SME tables are suspended by rubber bands. You have to make sure the upper platform is properly grounded along with the tonearm. Next you have to discharge the record WHILE IT IS PLAYING. The best way to do this is a conductive sweep arm like this one  https://www.sleevecityusa.com/Antistatic-Record-Cleaning-Arm-p/tac-01.htm. The bristles are conductive carbon fiber. It tracks along with the tonearm picking up incidental dust and discharges the record along the way. Things like mats and Zerostats DO NOT WORK. Vinyl is not conductive. Discharging one side will not completely discharge the other. Remember the static is being created by the stylus rubbing the groove.
So make sure the upper platform is grounded and get one of these arms and I guarantee you will never have a problem with static again. If you do I will buy the sweep arm from you.