Matt,

I really think it is..in my ponds. I used RoundUp before I knew this around one pond and had no frogs, zero, notta. This year, I've got frogs everywhere. May be due to other factors, but it sure looks suspicious.

I'll say something else which looks suspicious. I've had naturally ocurring Gambusia in three ponds that were never touched by RoundUp but never had them in the one Pond where I used RoundUp around the shoreline. This year, there are also Gambusia in that Pond...maybe coincidence, maybe unrelated, but I wonder. Frogs are welcome in my ponds, but RoundUp no longer is.