I personaly saw what comes out of my wash machinces. I have a box with
 two leach lines for my washer, both lines were stop up with black dirty
 lint. [nasty]. I went to wash machine septic .com and found a filter
 that cleans lint and other gunk to make it safe for our septic leach 
 lines. [$145.00 ] i am going to try one instead of digging new leach
 lines, it is cheaper and less work because i have to do it myself.
 All i have to do is pipe the washer to septic tank which is eazyer
 if it really works. I would like to have infomation about this filter.