How to Control Lawn Grubs Organically?
Organic grub control is a pretty effective way to control Grubs. 
Did you know that most pesticides are poisoned and they have a half-life? These poisons can affect every kind of living organism in one way or another. Even though you can use pesticides to kill lawn grubs, they also kill the beneficial living organisms in your lawn. So if you're having problems with lawn grubs and you want to get rid of them here are three different methods that you can use.
The first method is referred to as spikes of death. ( when I first read about the name of this treatment, I was laughing.) basically, this entails wearing spiked aerator shoes and walking over your lawn opines. Actually some of the experts on Japanese beetle control have stated that this is their favorite method. You have the benefit of aerating your lawn and killing grubs at the same time. It could almost be enjoyable.
The second method is to use something called milky spores. Actually, the scientific name is the milky disease. Milky spores is just a brand-name product. In order for this product to work, you need to have a high concentration of lawn grubs are the existing in your lawn. The disease is actually bread and transmitted through the grubs themselves. So the more grubs you have, the better your chances are of reducing the population. In controlled laboratory tests, milky spores has been very effective. In order for it to work, the long temperature has to be above 65° and the insect actually has to eat the milky spore while they are chomping at your roots. The advantage of using this type of organic solution, is that it can stay in your lawn for a very long time and you never have to reapply it. Also, as far as experts know, the only organisms that it affects are white grubs, and it works best on the Japanese beetle.
The third method you can use to organically eliminate grubs is called using beneficial nematodes. A nematode is a long skinny worm. Once they are in your soil, they can be parasitic to grub worms. This means that they will attach themselves to grub worms and eventually kill them. They are fairly effective, especially with large populations of grubs. Studies have proved that this method of getting rid of grubs, is fair effective. (see ScanMask in the product carousel.)
The fourth way to get rid of grubs is to use a lawn dethatcher or a power rake. I am surprised that I have not found this method mentioned anywhere else, but I know that it works because whenever I power rake a lawn with grub problems, I find lots and lots of dead grubs mixed in with a thatch, Most of the time, the grubs will live in the thatch layer of your lawn. By simply removing the thatch, you're going to be able to remove at least half of the grubs in your lawn. Not only that, they will also be more vulnerable to natural predators such as birds if you remove the protective layer of thatch from soil. Also, after you power rake a lawn, it is the optimal time is received and fix the damage that was caused by the grubs to begin with.