Does anyone have a source (internet store?) to buy Bti? I'm specifically looking to purchase Bti (not Bt). Bti the israelensis strain and Bt is a kurstaki strain - the bottom line is Bti should help to "organically" help kill fly larve, mosquitoes and gnats. Bt should have an effect on leaf - needle feeding caterpillers. I would like to get both but my pressing need is to get the Bti. HELP! Does anyone have experience positive or negtive using this stuff? Any other alternative to getting rid of no see ums (gnat family - red ones - can't se um but they are red) We do know they breed in still water but we can't locate their envronment from where they are coming from, so we need to try the Bti or something else that will not kill my micro herds.