Product review (5 stars): You probably do need one of these!
Most modern washing machines no longer have a lint trap.  We have old plumbing, and I was using the snake too often.  You have to modify your washer drain hose to install this, but it will work on any machine.  Come back a month or so later and I bet you will be amazed what you have to clean out of it!

Glad I bought it.