We vacuume ours every week. the beater bar (moving part on vacuume) is on the highest setting (minimal contact with carpet).
Yes, it does seem to affect the traction. but only slighly, but hte time the 1st set of heats are done, can't notice.
Also, I have seen another track locally put paragon in a spray bottle and lightly (and I mean lightly) spray the curves. At 1st..it's SUPER slippery, but after about 5 minutes of about 1/2 dozen cars out there just driving through it..it gains grip and is fully ready for the 1st round of heats.
The products and places I support.
www.michianarc.com www.facebook.com/michianarc - www.russellrc.com
www.teamtekin.com - www.teamcrc.com - www.teamassociated.com
www.fantomracing.com - www.discountrcstore.com