Wait 48 Hours

• Apply Weed and Feed when the grass is wet. Allow the chemicals to permeate the lawn for 48 hours and then water the grass thoroughly. Do not go on the grass until you have watered the lawn thoroughly.
  
  

Weed and Feed May Have Dangers

• Weed and Feed may be dangerous even when applied properly. According to the Thurston County Public Health and Social Services, the pesticides in Weed and Feed may be linked to cancer, neurological diseases and reproductive problems. In addition, the chemicals are tracked into homes and leach into the water supply.
  
  

Bottom Line

• Consider pulling weeds by hand and reducing fertilizer requirements by leaving grass clippings on your lawn. If you use Weed and Feed, follow instructions carefully and stay off the grass for at least 48 hours and until you have watered it thoroughly.