Wouldn’t the collapse of cyanobacterial cells result in elevated cyanotoxin levels?

If used according to guidelines, timely use of the Lake Guard™ should prevent the creation of a bloom and the accumulation of toxins in the first place.  Any released cyanotoxins will be degraded by residual compound and diluted in the water..

If  a late-stage treatment is unavoidable, toxin levels will rise once the full blown bloom collapses. However, this inevitable result would also occur if left to develop naturally and most likely under much worse conditions.