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→Modes of Action
* These are mainly used for pest control in crop protection schemes. The above two drugs though are both currently used for flea control.
* These are mainly used for pest control in crop protection schemes. The above two drugs though are both currently used for flea control.
* They work by stimulating and then blocking post-synaptic nicotinic acetylcholine receptors which leads to paralysis and death.
* They work by stimulating and then blocking post-synaptic nicotinic acetylcholine receptors which leads to paralysis and death.
'''Phenylpyrazoles - Fipronil, Pyripole'''
* These are used for flea control and work by blocking GABA transmitted impulses, thus blocking the influx of chlorine ione into nerve cells.
'''Macrocyclic Lactones - avermectins and milbemycins'''
* These are endectocides are will be discussed in full on the anti-helminth pages.
'''Amidines - Amitraz'''
* This has limited action in veterinary medicine.
* It works by acting on octoparamine receptor sites, these are within parasite muscles, resulting in increased nervous activity, spasming and death.
===Inert Inorganics===
These are inert substances, often powder, that are used to treat the environment in a properly managed flea control scheme. They work by dessication of the flea eggs or by clogging their spiracles. An example is '''Sodium polyborate'''.
===Insect Growth Regulators===
'''Insect juvenile hormone analogues - methoprene, pyriproxyfen'''
These work by blocking receptor sites for insect juvenile hormone. This stops the juvenile insect from continuing along it's natural form of devlopment and never reaching adult status.
'''Chitin Inhibitors - Cyromazine, dicyclanil, lufenuron'''
These likewise block insect development by preventing the insect access to chitin, one of the key components to an adult insect's exoskeleton.
==Points to Consider When Choosing an Ectoparasiticide==