The saying “less is more” is the best answer for this question. A dusting every other week (or monthly if it doesn’t bother you too much) is about all the regular care you need to give your furniture. One thing we recommend in my shop is to apply a good quality paste wax once a year to protect the finish and give it a good shine. Don’t go using commercial spray waxes and polishes. They do nothing for your furniture and are especially messy if you spray it over a waxed finish. If there is any dried food or dirt residue on the surface, you can use a water dampened soft cloth to remove it and dry it with another soft “tee shirt” type cloth.
We offer an on-site furniture evaluation and maintenance program depending upon your needs. Please contact us to discuss your needs and we can come and give you a free assessment.