Have to ask but a mowing customer has asked me to aerate and overseed his lawn next week and I noticed that the lawn was just sprayed last week with a prodiamine Pre-M application by another outfit. I am new to this chemical stuff so I have no problem asking if i am unsure. It has rained quite a bit since the application but have been told it is OK to seed and also not OK to seed. What is your opinions or past experiences? Thanks!