Pond Boss Forums INTRO Questions & Observations Placing branches down for YP spawn

I don't know of any way to verify that there was a 100% kill other than draining and seeing if anything was moving.

BUT, if the dosage was done correctly, I wouldn't worry about it. In that particular 365 acre lake, I truly believe that there was a 100% kill because even the crayfish were dead. The lake was dropped 4', and while I don't remember seeing the rotenone being applied, I do remember seeing all the dead fish. I think at that time the State erred on the side of "if a little is enough, 2x the amount is better".

I can't tell you how many roll-off dumpsters were filled with dead fish. All the people that owned houses around the lake were out there scooping up dead fish and putting them in the containers.