Yes and no ...Weed and feed weed control products are not recommended for effective, long-term use.  Repeated use can damage your lawn by giving it an "energy drink" that causes your grass to grow abnormally fast. This results in weak, thin patches of grass that cannot withstand the stresses of everyday life like traffic and pets.  The result is a patchy lawn with bald, brown areas where the roots have died off due to over-saturation with water and nitrogen.