I use Speedzone or T-Zone. Takes care of pretty much everything except crabgrass.

 

Big box store request: Any three-way products are suitable for spring/low temps. Look for ingredients like 2-4,D or MCPA, Dicamba, and Mecoprop-P (MCPP). For difficult broadleaf weeds, look for something with Triclopyr. If temps are higher or late season - If you are targeting crabgrass or other grassy weeds, use Quinclorac. Sedges: Sulfentrazone.

 

Should I look for products that specifically say "for lawns" assuming that means it won't kill the grass

 

Yes, you should follow the label directions. The ingredients I listed are what are available from Big Box stores.

Even though 2,4-D and Triclopyr are combined in other products for cool-season turf (like T-Zone and Triad TZ), the product "Crossbow" (Triclopyr Ester + 2,4-D Ester) is not labeled for residential use.

An example of a "for lawns" product is RoundUp FOR LAWNS 3 (Northern). This product has four active ingredients: MCPA, Dicamba, Quinclorac, and Sulfentrazone. However, RoundUp Weed and Grass Killer or other products will have ingredients to kill most grasses, like Glyphosate, Glufosinate, Diquat, Fluazifop, and/or Imazapic.

RoundUp for Lawns is relatively expensive. A cheaper alternative would be the Spectricide version, which uses 2,4-D instead of MCPA. These are my first recommendations for anyone with a wide range of weeds, as the ingredients will handle most common weeds. Anything left is usually up to Triclopyr or other specialty (non-big box store) products. You will find different brands like Ortho - check the active ingredients and the label directions. Products with the same ai and concentrations should perform about the same.

 

Spectricide concentrate used in my tank sprayer usually takes care of like 90% of the weeds I get. You can get it off the shelf at any big box store.