I buy them as Mosquito Dunks. Doughnut shaped and float on the surface releasing bacteria that consume larvae. Contains Bacillus thuringiensis subspecies israelensis solids, Arnold On 04/08/16, Lee Poulsen wrote: And as I mentioned in my case, along with the neem oil or mosquito-eating fish options, you can also buy a type of bacteria that is lethal to mosquito larva. I get it at the local hardware chain and I’ve seen it in granule form and in a floating wafer form that I just throw into my tubs of water. --Lee Poulsen Pasadena, California, USA - USDA Zone 10a Latitude 34°N, Altitude 1150 ft/350 m > On Apr 8, 2016, at 8:31 AM, Pamela Harlow <pamela@polson.com> wrote: > > I keep white cloud mountain minnows in my water lily tubs. Those small > fish need winter shelter in cold climates -- I keep an aquarium for them -- > but they gobble mosquito larvae with diligence and enthusiasm. And they > are cute! > > On Fri, Apr 8, 2016 at 8:16 AM, Judy Glattstein <jgglatt@gmail.com> wrote: > >> Should we be concerned about standing water in tubs and buckets for >> moisture loving bulbs? How to manage this in light of zika and other >> mosquito vectored virus diseases. _______________________________________________ pbs mailing list pbs@lists.ibiblio.org http://pacificbulbsociety.org/list.php http://pacificbulbsociety.org/pbswiki/