Not Worth IT

I have had this product for three months and they have replaced it once with a new unit. Having the same issues as the original product. It will not return to the dock to charge. It just goes in circles and then goes across the floor when instructed to go back to the dock. It randomly starts cleaning sessions on its own.  It has also stopped cleaning the floors to the degree it did when I received the second unit. Now, they want me to mail it back for repairs. What a supreme hassle. I would not purchase again.