Good info.
Was that testing on New Zealand Mudsnails and both Whirling Desease life stages?
Do you have a link to the report? I would like to forward it to my contacts at the Colorado DOW and the California DFG
Straight household bleach is very distructive to waders. 5% and 17% solutions of household bleach were ineffective at killing snails. see this test report:
http://www.esg.montana.edu/aim/mollusca/nzms/NZMSReport03.pdf