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The main problem with ectoparasiticides are their potential toxic nature. This is an increased risk compared to other pharmaceutical products because of the large volumes and high concentrations that are used. This is not only a risk to animals, but to man and to the environment. Man and animals can experience acute toxicty if concentrations are calculated incorrectly. It has been suggested that chronic neuropathic toxicity can occur with repeated exposure to organophosphate dips, this is highly controversial at the moment and currently there has been no absolute proof of this. Due to their potential ability to reach waterways specific regulations have been put in place concerning their disposal. Please look at the above defra link if you want more information.
 
The main problem with ectoparasiticides are their potential toxic nature. This is an increased risk compared to other pharmaceutical products because of the large volumes and high concentrations that are used. This is not only a risk to animals, but to man and to the environment. Man and animals can experience acute toxicty if concentrations are calculated incorrectly. It has been suggested that chronic neuropathic toxicity can occur with repeated exposure to organophosphate dips, this is highly controversial at the moment and currently there has been no absolute proof of this. Due to their potential ability to reach waterways specific regulations have been put in place concerning their disposal. Please look at the above defra link if you want more information.
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==Resistance==
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Like all anti-infective agents resistance is starting to develop as a very serious problem within this set of drugs. This has been because the parasites experience high selection pressure, with the vast majority of the parasite population coming in contact with
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