Flea control in the outdoor environment generally involves treating the yard and kennel areas where fleas are most likely to occur. Fleas tend to like it where it is moist, warm, shady, and where there is organic debris. They will also tend to be where pets spend more of their outdoor time. So be sure to concentrate on areas such as patios, under porches, dog houses, etc.
Rake away any organic debris such as leaves, straw, grass clippings, etc., to disturb flea habitat and allow any flea and tick product you use outdoors to penetrate.
If you are going to treat your yard, we prefer an environmentally safe spray containing fenvalerate for this purpose. There are also sprays which contain insect growth regulators which can be used.
You may need to treat the yard every 7 to 21 days depending on the product. Regardless of the product used, remember not to spray when or where runoff could go into lakes or rivers. Read the label on all insecticides thoroughly and apply them as directed.