AQUATHOL K (liquid formulation) has some water-use restrictions (fish-consumption: 3 days, livestock watering: 14 days, etc).
AQUATHOL SUPER K granules also lists various restrictions, but doesn't specifically site livestock. I've asked the mfgr for clarification, as omission doesn't always constitute permission. Label>
AQUATHOL SUPER K Label .
The impact of this product is usually confined to the treatment area, although some diffusion (impact) may be observed in untreated adacent areas. Treatments should be conducted when two consecutive calm/sunny days are anticipated.
I guess my memory was off on the P. americanis name - but I sure thought I had seen it somewhere in the past. ** I just noticed that the label linked above lists "AMERICAN PONDWEED" as P. nodosus. So, there's a bit of confirmation for you. **
