How to apply Diatomaceous Earth (Pest Grade)
Pets and Livestock:
Shake onto your dogs and cats coats every couple of weeks for a natural flea treatment.
Put it out where your chickens like to take dust baths to control mites. Sprinkle it in the hen’s nest boxes and on their roosts.
You can fill dust bags with it for cattle to rub on and sprinkle it on manure piles to kill fly maggots and control odours.
In the home:
Dust or sprinkle the dry powder around your house and where the pets sleep to control fleas, roaches, silverfish, and ants. We would recommend an old talcum powder container so you can puff it into crevices. Figure on using 1/2 lb. for every 1000 sq. feet of area.
Sprinkle it around basements and baseboards where pests hide and creep.
Dust your bed frames, under furniture cushions and your carpeting to kill bed bugs and fleas.
For bedbugs take apart bed and dust joints and channels. Dust any hollow tubing and the interior framework as well as the mattress and all cracks in the room.
Allow a good length of time for the powder to fully kill the cycle of the pest as some parasites only feed every 5 days or so and to allow eggs to hatch and begin feeding.
In the garden:
You can use DE as a dust in the garden around the base of plants. Just be sure to wear a dust mask if doing a large job, to prevent any possible irritation. Dust plants after they are wet from a heavy dew, rain, or irrigation to insure the product sticks to the surfaces.
You can use it to pre-treat seed beds and seeds to keep them from being attacked by bugs. It will also enrich the soil and will increase the soil’s water holding ability.
It may also be used as a sprayable mixture. This is the best way to treat large areas such as a lawn and can be used to reach high areas such as up in trees to kill caterpillars and to put a protective coating on fruit.
Mix 1/4 to 1/2 cup of DE in a gallon of water with a teaspoon of liquid soap, and spray it out on your lawn or plants. With this method there is no problem with dust drifting or being breathed in, and once the DE dries it will be active.
You can also mix up a thicker soup to paint on tree trunks for the control of borers and bark hiding insects. Be sure to keep the spray mixture agitated as the powder will tend to settle out and if you use too much powder in the mix the sprayer may get clogged. This is a great way to treat for aphids. You should reapply after every good rain.
Read post on controlling Vine Weevils in your flower containers.