Changes

* '''Speed of Kill'''

* '''Speed of Kill'''

* '''Repellenct''' - how readily the product repells parasites from landing or feeding on the host. This can be provided by a either a repellent vapour phase of the drug, or from a contact repellency.

* '''Repellenct''' - how readily the product repells parasites from landing or feeding on the host. This can be provided by a either a repellent vapour phase of the drug, or from a contact repellency.

* '''Antifeeding effects''' - the combined or singular effects of repellency, quick knock-down and behavioural changes can reduce the oppurtunity for a parasite to bite and feed.

* '''Antifeeding effects''' - the combined or singular effects of repellency, quick knock-down and behavioural changes can reduce the opportunity for a parasite to bite and feed.

* '''Spectrum of Activity''' - how many different species and stages of the life-cycles does the product act upon.

* '''Spectrum of Activity''' - how many different species and stages of the life-cycles does the product act upon.

* '''Ovicidal Activity''' - The ability of some products to affect the fertility of parasite eggs.

* '''Ovicidal Activity''' - The ability of some products to affect the fertility of parasite eggs.

* '''Larvicidal Activity''' - is the product active on the animal or in the environment. Which one you desire will depend on the parasites involved and also the host species.

* '''Larvicidal Activity''' - is the product active on the animal or in the environment. Which one you desire will depend on the parasites involved and also the host species.

==Application==

==Application==