My lawn in Southern Utah had a bad infestation of crabgrass. I sprayed to kill it last Fall and was planning on top seeding next month when the weather warmed up a bit. Lots of bare areas... Landscapers applied a fertilizer with pre emergent last week; uggghhh! I know I can't do seed now. Question is whether I can do sod with freshly applied pre emergent? If so, how long do I have to wait and/or, how much soil do I need to remove and replace? Thanks in advance for any help.