<p> </p> <p>Tenacity Herbicide works by inhibiting an enzyme that is essential to chlorophyll production and photosynthesis, allowing light energy to break down the chlorophyll and, as a result, turning weeds white within five to seven days after  application. This is normal and the white color is a sign that the product is working.</p> <p> </p> <p>Occasionally, you may see white tips on desirable turf grass, but this is a temporary symptom and these white tips will eventually be mowed off. Tenacity Herbicide by Syngenta offers pre- and post-emergent control of more than 46 broadleaf weed and grass species, including crabgrass, ground ivy, yellow foxtail, yellow nutsedge and unwanted bentgrass.</p> <p> </p> <p>Tenacity can be used at <span style="font-size: 0.875rem;">seeding to reduce weed competition so new turf can establish faster. Tenacity is the only residential-approved herbicide that selectively removes both nimblewill and bentgrass. Plus, it controls Crabgrass, Windmill grass, Clover, Ground ivy, Goosegrass, Yellow foxtail, Yellow nutsedge, Oxalis and more.</span></p> <p> </p> <p><strong>Key Features:</strong></p> <p> </p> <ul> <li>Weeds controlled include crabgrass, ground ivy, yellow foxtail, yellow nutsedge and nimblewill. It also controls unwanted bentgrass.</li> <li>Provides post-emergent control of tough-to-control weeds.</li> <li>Controls weeds at seeding reducing weed competition.</li> <li>Prevents and controls crabgrass pre or post up to four tillers</li> <li>Eliminates weeds at seeding so new grass can flourish.</li> </ul> <p><strong>Click <a href="https://homeandgardensupply.com/products/tenacity-with-dye-and-surfactant?_pos=1&amp;_psq=tenacity&amp;_ss=e&amp;_v=1.0">here</a> and see our kit that has everything you need to successfully rid your lawn of weeds.</strong></p> <p> </p> <p>*HomeandGardenSupply.com always recommends reading the entire product label before use, and following all necessary safety precautions, mixing instructions and proper application methods.</p>