I will be aerating this spring for a few of my mowing customers and I have a few questions. I did do a search and could not find these answered. I have already determined from other posts that I should charge any where from $13 to $20 per 1000 square feet. Question 1: When measuring a yard do I subtract the house or is it the total property? Question 2: How long will it take to complete a 10k house using a Plugr (65 Hoss I know you know this one) or a Ryan 28. Question 3: Will I need to use extra or special fertilizer other then a pre-emerg because I am doing this in the spring? Last question: I have read a lot about using soil conditioners after aerating. I am in the north east (Pocono area). Can anyone tell me what I should use for this. And do soil conditioners come with iron? From my readings it seems like it is added to it.