Yes, I have several acres, but I found that the concentration of grubs was higher in certain areas–nearest to the house where I have lots of plantings actually in my case. I could tell because the lawn was almost loose, not well-rooted into the soil…grubs at work. I did the nematodes on those areas, really focusing my attack. I think Milky Spore is easier to apply on large areas than the nematodes. M.