I agree with what you are saying, Hugh. It makes sense (silca stays sharp when wet) But every "DE for Slugs" treatise I"ve seen recommends replacing the DE if it becomes wet or 'caked' Implying that it loses effectiveness if wet.Dear Allan, For reasons explained by Will Winter, don't give DE to your animals dry. Always feed it to them as a wet feed so they don't inhale it. I give it to my dogs and cats with some yogurt, or whatever.Best, Hugh
Anyone treating fleas on housepets with DE?
Another one that never worked for us. (We'll have to wait and see about the lung cancer, though)