While fertilizers pose little risk to pets, weed and feed products that contain pesticides and herbicides are more worrisome. The risk of developing malignant canine lymphoma is twice as high for dogs exposed to lawn products containing 2,4-D. In addition to injury to household pets, pesticides and herbicides kill fish, beneficial insects and birds. Children exposed to high levels of pesticides and herbicides may suffer developmental delays, learning disabilities and an increased risk for cancer. Birth defects, miscarriages and sperm abnormalities are also linked to pesticide exposure.
Read packaging directions carefully before purchasing, and avoid products that contain herbicides and pesticides. One of the problems with these products is that they contain a combination of chemicals that may not even address the needs of your lawn. Instead, buy products that contain just fertilizer and spot apply herbicides or pesticides as needed. Apply chemicals on a cloudless day to avoid drift. Wear protective clothing and follow directions carefully. Keep children and pets off the lawn for at least 24 hours.
Apply an organic fertilizer, such as compost or manure, in late spring and in early fall to provide lawns with the nitrogen they need to thrive. If your lawn appears to be suffering from insect attack, consult a nursery expert before resorting to pesticides. Pull weeds by hand and learn to live with a lawn that isn't perfectly weed free but is safe for pets and children.
Practice good lawn care to prevent many of the problems that drive homeowners to use pesticides and herbicides. Mow the lawn high and leave the grass clippings where they'll break down and add nitrogen to the soil. Water lawns deeply two or three times per week rather than daily. This practice reduces diseases and root rot and encourages strong plants. Seed bare spots in the lawn to discourage weed growth for a healthy and safe yard.