Thomas, I don't have any personal experience with them, so I talked to Dale White at Uncle Luke's in Troy. He specializes in organic gardening products. Dale said he's been selling them for several years. Do they work - yes, no and maybe. They must be mixed and applied properly. Temps 55 - 60. Watered in well and so forth. There are many strains, so you need to buy the right kind. These crittters are not winter hardy, so you will need to apply them every year. Milky Spore - a beneficial bacterium may be a better choice - it too needs careful application, but once established the bacterium live for 5 to 7 years. I'd do a good bit of research before using either. I live in the country and grow country grass - if it's green it grows. I do not treat for grubs. The nematodes cost between $25 and $30 for a canister that treat 2000 sq. feet, not cheap. Hope this helps. Best And Happy Yardening, Nancy
Using Beneficial Nematodes To Control Lawn Grubs
Question From: T. Clements - MICHIGAN
Q: Nancy, The past two years the hottest topic over coffee with neighbors has been grubs. From those that do-it-yourself to contracting lawn care services grubs are an issue. One of the topics that came up is the use of beneficial nematodes. Companies that sell them paint a picture of success but what in your opinion is the pluses and shortcomings of beneficial nematodes in lawn grub control?