For most applications, you can use 1 oz of Bifen It per gallon of water. For more specific usage instructions, please refer to the Bifen IT product label. The solution can be applied around the perimeter of the home including where the step meets the ground. This can be done using a one-gallon hand pump sprayer.
For the best application of Bifen IT to your lawn, you want to first mow the grass a couple days ahead of application.
Bifen IT will kill any gnats that come into contact with a treated area. You may want to look over our article on Getting Rid of Gnats for more information.