How long to leave diatomaceous earth on carpet for fleas?

How long does it take for diatomaceous earth to kill fleas? Well research shows that once the fleas come into contact with the powder, they usually die about 4 hours later. However, I recommend leaving it for 12 hours before vacuuming up all the powder (and any dead fleas) to ensure they die. read more

Well research shows that once the fleas come into contact with the powder, they usually die about 4 hours later. However, I recommend leaving it for 12 hours before vacuuming up all the powder (and any dead fleas) to ensure they die. read more

Allow the diatomaceous earth to remain on the carpets for at least 3 days thereafter you can vacuum them. This ensures that the eggs, larvae as well as adult fleas are taken care of by the powder. As stated before, it is essential to reapply the powder every week for 30 days and continue to vacuum every 3 days after application. read more

Leave in the carpet as long as needed. As long as you aren't kicking up dust or coughing (which shouldn't happen with proper application), there's no need to remove the diatomaceous earth. It remains effective as long as it stays dry, and often takes a week or more to start killing insects. read more