Ferti-lome Weed-Out Crabgrass Killer RTX gets Rid of the Tough Weeds – Roots and All! Controls Over 200 Weeds. New Formulation. Proven Performance. Controls both grassy and broadleaf weeds in one easy step including Crabgrass, Barnyardgrass, Foxtail, Black-Eyed Susan, Buttercup, Catnip, Chickweed, Dandelion, Dollarweed, Ground Ivy, Jimsonweed. Morning Glory, Poison Ivy, Poison Oak, Ragweed, Sunflower, Thistle, and other broadleaf weeds.