Product review (3 stars): Does not work with older Maytag Neptune
The service response we received from Green Giraffe and Pure Wash was excellent, but even following their advice and installing a Y diverter, the product did not produce the bubbles it is supposed to - indicating that the unit is working.  So, the rating is 1 for effectiveness on our washing machine & 5 for customer service = 3* average.  We at first thought we had the wrong type of unit for our machine (we had ordered a high efficiency unit for our front loading machine), and returned it for a standard efficiency unit - no bubbles.  After contacting Pure Wash for us, Green Giraffe advised us to purchase a Y diverter & sent installation instructions.  We reordered, but still no bubbles when the blue lights are on - so returning the unit.  By the way, our daughter in law loves her Pure Wash unit, but she has a new Whirlpool.