A:  I would contact Scott with that question. I think it has fertilizer in it and if you used it too often it could burn your grass. 

A:  Scotts Turf Builder 13.58 lb. 5,000 sq. ft. Halts Crabgrass Preventer Lawn Fertilizer is for prevention of crabgrass and other listed spring germinating weeds apply in early spring. For prevention of moss, annual bluegrass, and other listed winter annuals apply in early-fall. This product will feed the lawn for 6-8 weeks.

A:  I did use on weeds in driveway & sidewalk in 90 degree July weather & it killed all weeds in 1st dose.

A:  Yes, but temperature must be below 85 degree. Ok

A:  You will need to wait 6-8 weeks between applying Scotts Turf Builder Plus Halts Crabgrass Control and Scotts Turf Builder Weed & Feed.

A:  We applied it four weeks ago and now.... Green grass and weed-free

A:  Grass planted in the fall should be mowed 4 times total before applying Scotts Turf Builder Halts Crabgrass Preventer Lawn Fertilizer. This can be any combination of 1-4 times in fall and/or 1-4 times in spring prior to application, as long as it is 4 times total

A:  You should be fine

A:  I live in California and had great success with this killing all of the crabgrass but leaving the rest of my lawn nice and green. It REALLY kills any crabgrass and will leave it looking dead and brown.

A:  Recommend you visit the manufacturer's website: Scotts.com. They will provide you with the option of emailing or phoning them with your inquiry. This is best answered by the manufacturer.

A:  Of course it will if you property is pitched to any degree where the water can run off.

A:  George, heavy rain may diminish some of the effectiveness of the fertilizer, however, the coated slow-release fertilizers are not water-soluble they require action from soil microbes to be absorbed. If you do get heavy rain it is important to still follow the recommended time interval before your next application because there is no way of knowing how much of the fertilizer has been washed out.