I have had a koi pond for 14 years and have loved every minute of it, however this year I am literally run over with breeding toads. I have had them other years but not this many . this year I have removed at least 30 pairs. They lay their slimy eggs in my floating lotus planters and when I divide them each year , what a mess. Does anyone know of a quick and easy way ( not suffering ) to euthanize them ( not freezing ) ? I am not an advocate of this method but this year has really tried my patience. Any advice would be greatly appreciated.