I vacuum mine once a week. Just make sure you don't use an attachment with a beater bar. Every day before I practice I get a microfiber cloth BARELY damp (ring it out really good) and wipe down the table. I did this on my last table and when we pulled the old cloth off there was virtually nothing on the slate. Good luck to you.
expense really isn't a cost especially considering what it costs to replace the cloth compared to cost of cleaning. are we in a consensus is the simonis-x1 cleaner? or microfiber? or even both.
Damion,
I would recommend the x-1 and masters blue chalk. The masters blue seams to be finer and the x-1 sucks it right up.