Hi,
There are two forms of DE (Diatomaceous Earth). One is for agriculture/food
grade and one is for swimming pools. The swimming pool type is less than
worthless to kill insects because it has been fired and lost the sharp
edges. I buy the agriculture/food grade in 50 lb sacks at a feed store for
about $30. Works on all insects without hesitation. I even feed it mixed
in the minerals for my animals to help with internal worms and external
flies. There have been many studies of D.E.'s efficacy but as usual, all
the studies are mixed or clouded and no one can seemingly draw any clear
conclusions. My opinion is, it works miracles!
>
> Jean
>
> ******************
>
> I have used DE without much success. I bought 10 lbs of it and was putting
> generous amounts on all of the hills. At first it did seem to help but then
> the next week they were back.
>
