Thank you all for the advice. It seems like the Acephate is the best choice then?
I do have cats and a dog. The cats do not leave the house, but the dog does go into the yard.
I can close the greenhouse door though and spray only inside the greenhouse.
I never realized how toxic Imidacloprid was. Before it was permit only, I used to wear no PPE and breathe the stuff in and get it all over myself. I am a noted idiot when it comes to PPE. The labeling did not make it seem that dangerous.
I also forgot to mention I have malathion too.
The Acephate is one teaspoon per gallon, as I understand, and I should stay away while it is still "fragrant".
---------- Post added at 08:56 PM ---------- Previous post was at 08:46 PM ----------
Quote:
Originally Posted by estación seca
Pesticides like acephate, malathion, Sevin, nicotine, "natural, organic" permethrins and derivatives, and the nicotine analogs like imidacloprid, are toxic to all animals with a nervous system. They block transmission of nerve impulses controlling vital functions. Depending on the species they cause death by paralysis and suffocation, stopping the heart, or drowning in one's own saliva. This is usually accompanied by strong cramping of all muscles.
Different species have different sensitivities to them. In general cats and dogs are more sensitive to them than are humans, but the difference in sensitivity - thus the lethal dose - is not great. All these pesticides state full protective equipment should be worn when spraying.
Humans metabolize malathion much faster than do arthropods, but it is still possible to kill people with malathion. Permethrins and derivatives are less toxic than the synthetics, so more must be used.
Nicotine is one of the most toxic substances known. Obviously humans have figured out how to use it without dying immediately. But the difference between a lethal and non-lethal dose is small. A small or an elderly person, or child, might die if they eat one standard cigarette. At one time nicotine was sold in the US as a pesticide. It was removed from the market years ago because it is so toxic. Making your own nicotine extracts from tobacco for pesticide use sounds promising, but all commercial tobacco is contaminated with tobacco mosaic virus (TMV), which can infect many other plants, including orchids. The commercial preparation had been ultrafiltered to remove virus particles. This isn't practical at home without expensive equipment. Interestingly, TMV is readily found in bronchial and lung cells of smokers. Does it cause cancer? Nobody will fund that research.
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I am always interested in the science of these things. I believe malathion is an organophosphate and inhibits acetylcholinesterase, thus causing cholinergic poisoning/S.L.U.D.G.E syndrome.
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