Please help. I got spectracide to combat a tick/pest problem in my yard, but Malathion 50 was already in the sprayer. I wanted to use it up first then switch to the Spectracide. The lawn and assorted perennials (hollyhock and daisys) have been completely burned where the two pesticides may have crossed. What can I do to repair the damage? Do you think it was quantity or chemical incompatibility? Thank you.