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the answer was spraying at all is not necessary. it is dangerous to all life. the spraying is likely what is causing the human neurological effects on humans, that is being blamed on zika, and is definitely causing the deaths of bees, mosquitoes, and everything else that has been ignored in this entire discussion, flies, frogs, mice et cetera. i am sure many things are not immune to the spraying of poison for a purpose that is a lie. i am sorry i did not make that clear. i thought it was not too stealthily implied.

I was asking for an alternative to spraying.