We rate this DIY Solution as:
Limited Effectiveness for Eradication
Diatomaceous earth is a naturally-occurring sedimentary rock that can be ground into a fine white powdery substance which often has an abrasive type of feel. The abrasive nature coupled with its physico-sorptive properties of the substance can erode the natural lipid protective layer that insects posses and can result in a dehydration effect that can be fatal to those bugs that encounter it. Diatomaceous earth has proven highly effective against pests such as roaches, but tends to have a limited effect on bed bugs.
Bed bugs however, tend to avoid the substance where possible, reducing its effectiveness on any bugs or eggs that have eluded contact.
We encounter diatomaceous earth on a daily basis when treating our customer’s homes and are sad to say that its effectiveness as an eradication method is limited.
Directions: Think gourmet baker sprinkling powdered sugar on a cake: powder generously in areas that bed bugs are known to travel.