Fertilome Weed Out Lawn Weed Killer Concentrate Contains Trimec Herbicide. Kills broadleaf weeds in your yard including dandelions and poison ivy. Tough weeds like ground ivy, creeping charlie and violets need two applications five days apart. Use Spreader Sticker with Weed Out. May be safely used on Northern and Southern grasses. Do not seed for three weeks after using Weed Out. Do not spray new seedlings until they have been mowed three times. Do not spray on trees, bushes or flowers as it will kill anything with a broad leaf. Do not use in temperatures over 85 degrees. This stuff will work. I have used it with a pump up sprayer. It will kill Creeping Charlie with two applications. 1 Quart.