Extended Control Weed & Grass Killer by Spectracide ® (Ready-to-Use) This product is a nonselective herbicide that will destroy any plant it comes into touch with and prevent weeds for up to five months *. It penetrates plants via the leaves and travels to the roots.
How long before Spectracide weed ceases to be effective?
Use Spectracide Weed Stop For Lawns Plus Crabgrass Killer Concentrate to eliminate over 470 weed species, including crabgrass. In five hours, the product generates apparent effects.
Does the Spectracide herbicide expire?
Exists an expiration date for the herbicide Hi-Yield? Debra pens a Herbicides and insecticides have no expiration date. Most pesticides and herbicides are designed to be shelf-stable for decades. As long as you keep the lid tightly closed and store the item away from direct sunlight and locations of high heat, the vast majority will survive at least 5 years.