Look up their MSDS sheets, which recommend a call to the Poison Control Center for any skin, eye or mouth exposures, after immediate flush.
There is acute toxicology on lab rats at certain rates through the normal methods of absorption.
There is evidence of toxicology to marine animals.
There is evidence to direct effects in animal weights & liver function.
There is no evidence reproductive effects.
There is no evidence of carcinogenic effects... but...
That is just from the chem manufacturer going through the minimum requirements set out by the EPA... and according to the following study, didn't cover eval on food crops, so there is more carcinogenic/toxicology testing that may show potential harms. To note, those testing procedures are flawed in that they don't delve too deep into the problems, just enough to get by... short term study w/o extended consequences to animals & the environment... epa testing is a process to get product to market, and its a dance between the gov & the business, that's all... not really there to protect consumers... a fallacy. Just a process to get product to market.
You can try to read through this one, which basically states there are extended consequences to the overall ecosystem that we often take for granted, and might appear as a recurring, chronic problem for us...
Here is some generic info on
Floramite, listing varying toxicities... and lack of EPA study...
http://www.pesticideinfo.org/Detail_Chemical.jsp?Rec_Id=PC36422
Granted, my previous post was general precautionary statement towards most of the chems we find w/in the community. Look up each, relatively easy w the internet. But I would think it fair to say, this is some scary shit when thinking of ingesting, inhaling, or absorbing.
As a general rule, assume it causes cancer... treat it w precaution.