Ive been a customer since 2013, having bought a receiver and five collars over the years. The equipment is very well made, and the collars are extremely durable. My half outdoor cats have worn out one collar in 8 years.What prompted this review, however, is an issue I recently had with some batteries seeming to be dead before even being used. A quick phone call to the company yielded an explanation (I had taken the batteries out of their storage tube, leading to power drain while in storage) and an offer to send me free replacements. Again, this was entirely my error, but Paula very kindly insisted.These are good people making quality products and they have a customer for life in me.