I just thought you would want to see the poison ivy at my daughter's house on the back fence. Poison ivy was mature--wrong time of year to spray it. I sprayed it with T-Zone. Used an ounce or two of solution. Nothing happened after two days...and then... This picture was taken August 16, about 7 days after spraying. I should point out that the solution was about 4 months old. Originally prepared April 20, 2011.