Answer: The product you use will depend upon the current condition of your lawn. If your lawn tends to develop lots of different types of weeds such as dandelions, oxalis, chickweed, etc., then the weed and feed product can prevent them; if your only adversary is crabgrass, use a fertilizer with crabgrass preventer. (This will only eliminate crabgrass, not broadleaved weeds such as dandelions.) Hope this clarifies things for you!
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