L.A.
Hi K.,
Shaklee offers a germicide that comes in a concentrated form and is 100% money-back guaranteed.
This creates 64 gallons that will last you for years.
http://www.shaklee.net/sowing4health/product/BasicG
If, you want more information, feel free to email me.
L. Amason
Independent Shaklee Distributor
Web: http://www.sowing4health.com
Blog: http://www.goodngreen.org