I have no problem with their supplies but their customer service is at best incompetent, and at worst manipulative and malicious. Not only do they call and email multiple times daily until you reorder supplies, but when you ignore their calls they just keep calling and when you call them back to say, no thank you I have sufficient supplies for 90 days they ask when they should call again.. so I said 90 days Hung up and I got another email immediately telling me it's time to reorder supplies. It's as if they're saying if you call to complain we're just going to do it more.