satisfieding, aeration, monitoring for diseases. the main thing i needed done was to have the weeds brought back under control. >> reporter: but there was a big difference in price. the bids she received included seeding, pesticide treatments and ranged in price from $335 to $928 for a one-year contract. that's a difference of nearly $600. >> we strongly recommend that people get competitive prices. >> reporter: robert krugoff says it surveyed 133 lawn care services. 39 companies were rated superior overall by at least 80% of their customers, including working on this lawn in falls church, virginia. but 19 companies did not receive such favorable ratings from even half of the customers it surveyed. common complaints, poor work results, customer service problems and overcharges. >> i think it's very important to say exactly what your expectations are, because there's a lot of variation in what these firms will tell you. it's worth it to have several out, see which ones make sense, which ones give you advice you can believe in. >> rep