BONIDE POISON IVY AND BRUSH KILLER BK-32 CONCENTRATE 1 QTBonide Poison Ivy and Brush Killer BK 32 Concentrate is a powerful, non volatile formula that works on over 70 of the toughest weed species, yet is harmless to grass. It stays where you spray, without danger of vapor damage or root uptake of surrounding trees and ornamentals. Bonide Poison Ivy and Brush Killer BK 32 kills brush, woody weeds and vines including Poison Ivy, Poison Oak, Kudzu and Wild Blackberry. Results with one application. Guaranteed