First generation, requires multiple feeds. Less potent than Brodifacoum, lower risk of secondary poisoning. Low risk of secondary poisoning.Īcute toxin so requires multiple feeds. Medium-to-high risk of secondary poisoning. High risk of secondary poisoning.Įffective knockdown tool and for ongoing control.īuilds up in the environment. For more details about each one, see below the table.
It causes appetite loss within 20 minutes (hence the need to pre-feed).īelow is an at-a-glance summary of commonly available vertebrate pesticides in New Zealand. Cholecalciferol is known as an acute toxin. This is why it is a multi feed toxin as rodents must eat several doses of this rodenticide to get a lethal dose. The body’s ability to maintain proper calcium levels must be overwhelmed before cholecalciferol becomes toxic. Doses of cholecalciferol lead to too much calcium in the blood.
Vitamin D maintains calcium balance in bodies by enhancing the absorption of calcium from the gut and kidneys. An example is cholecalciferol, which occurs naturally as Vitamin D3. There are a number of other vertebrate pesticides that work differently to anticoagulants. stations are refreshed every 3-4 weeks) so that lethally poisoned animals habituated to the stations do not return to take more bait than necessary. However, because there are generally multiple individuals present, these toxins are pulsed (i.e. They can take longer to break down in the environment. As a result they are generally applied in lower concentrations in baits, are lethal after a single feed and effective against rats and mice that may be resistant to first generation toxins. Second generation toxins are far more toxic than first generation.
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