If you want to avoid extra expenses and maintain playability for as long as possible, you should use a vacuum as often as possible, cover the table every night, and if you play every day then wipe gently the playing surface twice a month (no more) with a wet towel, very well squeezed.
You may add some benzene without lead to the wet towel before squeezing it, it's a quite "innocent" chemical that you can find in supermarket stores, helps applying less moisture to the cloth.
Use a dry towel with a bit more pressure and clean towards one direction, wait for 10-15 minutes and the table is ready for play.
Clean the rail surface with a wet cloth and some wax polish every once in a while, use clean balls (you may use alcohol to clean a well used CB before applying a special cream), and if you can avoid chalk that leaves too much residue on the cloth.
Having the table in good conditions is essential, as well as using spots at break areas if you don't care about repeating 100% exactly tournament racking conditions. It's also good that twice a year you clean the ball return system under the table (if it has one), since dirt will be there too and is picked up by the balls after pocketing.
After some time you will notice that the rail cloth has picked up some dirt which doesn't come out by cleaning, making the rail reaction faster and closing in rebound angles.
You can use gently a 1000 grit sanding to take out the dirt from it, wiping it out with a dry cloth afterwards, restoring the rail's reaction to a more "normal" one for some time.
It is also essential that the cloth is well stressed when installed by a professional.
Keeping these habits will help you keep a well playing table for a long time, "a recipe for happiness" as the great Robert Byrne would say...

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