I had read to use no more than 5% seven dust. here is the link..I'm sad to report that the DE isn't working on my cutter ants. I have had DE in the sand floor of the coop all along and sprinkling it around the outside of the coop only caused a momentary hiccup in their diligence. I had shut down two of their large tunnel opening with 10% Sevin. Now they are opening up new openings inside the pen. I don't let the chicks outside of coop yet, into the pen, because of their young age. If I use the 10% Sevin around the base of the coop, that's sand that they'll eventually be running around in. I don't know if it would be safe to use that strength so close. Comments, anyone?
It's also possible that they could just outfox me and open up holes inside the chicken coop since the DE doesn't affect them, completely circumventing the Sevin-ed pen. Does anyone have any more advice? I'm willing to try as this is getting out of hand and I'm just subsidizing the ants. They're not getting to the food dispenser but to the food that the chicks spill. Sure didn't know that the cutter ants could use chicken feed to grow mushrooms. And I always thought the chickens would eat the ants. *sigh*
https://sites.google.com/a/poultrypedia.com/poultrypedia/medicine-chart
We also use DE, but found that a heavy dusting and not a light dusting works better.
RobertH