What is the effect of temperature to the extract of any plant that has the potential property of killing mites

We will assume that the solution in the sprayer is stable. What do we mean by very hot. I live in the central Valley of California and 106 degree summer temps are common. Hot yes, very hot - no. 1) High temperatures (and sunlight) could increase the degradation rate of your extract, thereby decreasing its efficacy. This occurs the pyrethrins (I and II) which are the active ingredients of Chrysanthemum cinerariaefolium extracts. 2) Toxicity develops if the chemical is degraded slower than the rate at which a negative effect is produced. Therefore, the rate of enzymatic degradation will increase with increased temperatures. 3) Your AI may require enzymatic activation to produce toxicity (as in the case of organophosphates) Therefore, increased temperatures could increase the formation of the toxic product, and enhance toxicity. Sounds like three nice experiments to plan and lots of data to interpret.

Evaporation of the liquid that the extract is suspended in would leave the extract concentrated and in contact with the mite, probably to the benefit of the extract. Heat might damage a chemical structure that is not very stable but with an extract, I would guess the high heat would have to be added heat, beyond what a hot day would be. Evaporation of the carrier material, like water or other solvent, is in general, what mite-icides frequently would depend on even given that the bulk of them may be internally administered, in the case of pets. In short, it would be preferred and leaves a concentrate right on the mite or the area effected. Higher heat would not be found other than that of the specimen treated and additional heat would cause harm to the animal or plant by the heat alone. If the extract was too strong for the plant or animal, an oil base should be used as that would be heat resistant to the point of fatality before fail.