We live in a Decatur, Ga. neighborhood with lots of trees. I'm a gardener & water frequently to keep plants alive during the summer though we try to eliminate standing water. I grow lots of herbs & some veggies, which we eat, so I'm looking for an eco-friendly choice. Mainly we have lots of the Asian tiger mosquitos that are out biting all day long. Advice?
We're right down the road from you in Lilburn GA and know the tiger mosquitoes well. In fact we sell many products for this pest. You can read up on all these products as well as the equipment we carry here:
Mosquito Control: http://www.mosquitoes.net/mosquito-control
Fogmaster Mini Fogger: http://www.bugspraycart.com/equipment/foggers/fogmaster-5330-120-volt
Personally I prefer the MIST BLOWER but that's because I'm treating an acre with a lot of leafy brush so I need something versatile and mobile. The back pack mister makes fast work of my lot and lets me go anywhere without the restraint of an electric cord.
Back Pack Mister: http://www.bugspraycart.com/equipment/foggers/solo-mistblower-backpack
Now since I'm not growing anything I eat, I mostly mist with BIFEN. It's odorless, won't hurt any plant, easy to mix and works well on all pests.
But since you're growing plants which will yield edible fruit or vegetables, I recommend going with the EVERGREEN PYRETHRIN. It can be sprayed on edible crops and will work just as well as the Bifen for the short term.
Now what I mean by the "short term" is that side by side, both products will kill most everything within a day of being applied. From there the difference in the two is that the Bifen will last a good 1-2 weeks. Maybe even longer.
But the Evergreen will be gone within just a day. Evergreen uses a "pyrethrin"active so it won't provide any type of lasting residual. This is mostly for safety reasons since you'll be spraying edible crops.
Now don't think you're sacrificing much using the Evergreen in place of the Bifen. Remember, when you treat with either you'll be killing most everything in the area. And that means you'll be pest free for awhile since it will take some time before the local pests come back to the treated area and re establish themselves.
Just how long that takes will vary from yard to yard. But if you can get a couple of weeks without pests, then the tradeoff would be non existent. But obviously if the pests come back in a day or two, you might want to opt for using the Bifen in the "non edible plant" area and the Evergreen on the vegetable garden only.