Posted 6/24/2019 20:17 (#7579817 - in reply to #7577183) Subject: RE: Roots in tile
Northwest, Ohio
Cu2So4 container says to place 2 lbs. in the drain that has or suspected of having roots after the flow slows. Because of the rainfall we have had I just placed 2 lbs in each standpipe and catch basin along tree lines/wooded areas for the SECOND time this spring. Costs less than$2/lb in 50 lb bags.