I purchased these grinders a year and a half ago and wrote a negative review on their customer service. I am writing again to rescind that one. Unfortunately the owners of the company had a family tragedy and had to travel to another country to take care of things. This is the reason why customer service did not respond to my emails. Also, I was upset that the salt grinder stopped working. A brush is included with the grinders for a reason. Regular cleaning is essential to maintaining this great product. I also fixed the issue with my salt grinder by cleaning it well and applying a very small amount of rubbing alcohol on a cotton swab and cleaning the battery area. Grinder works perfectly! I don’t think this will be necessary again if I make sure to use the brush regularly. The main reason for this review is about their customer service and a great product. After they returned to the US, the owner of the company personally called me to apologize for the delay in responding to my emails. I love how neat this set sits on my counter in the holder! I have arthritis and a regular grinder is difficult for me to use. These grinders are so easy to use. Great product!