I have two lawns and my own that I am servicing this year that were plush and green last year but are now dead looking because of snow mold. What would be the best way to go about repairing this and getting it back to it's original color including which chemicals to apply. Right now I am applying Dimension 13-2-5 to all of my properties for crabgrass control. Should I dethatch it and then fertilize or... One of the lawns was a sod install two years ago and mine and another were seeded so I don;t know if that matters. Please share your opinions.