1. In what time frame the second-generation anticoagulant kills a rodent?
The average second generation anticoagulant bait such as Ratimor will kill rodents between 2 - 20 days after the baits have been consumed. Normally it will take 5-7 days since the consumption of the bait to die. It is important for the rodents not to feel the effects before 2 days as this could warn other rodents in the pack.
2. Are there any specific requirements for the storage of rodent baits?
Rodent baits should not be stored in places where they could contaminate water, food or animal feed. They should be stored only in original container in a cool and dry place inaccessible to children and pets. Keep containers closed and away from other chemicals.
3. If a domestic animal consumes a mice that died as a result of consumption of a second generation anticoagulant, what is the likelihood of the pet dying of secondary poisoning?
It depends on the active ingredient of the bait. Brodifacoum is more dangerous than Bromadialone for instance. In case of Ratimor, which uses Bromadialone as an active substance, it is almost impossible for the pet to die from secondary poisoning as the quantities of dead rodents it would need to eat would be several pounds and more.
4. Does the mouse or rat that is dying from the effect of the rodenticide bait leave the building to die?
There is no way of predicting what a dying rodent would do but most usually they prefer to stay in their nests, often hidden from view and difficult to reach. On occasions they are also known to die in bait boxes where they consumed poisoned bait.
5. What is the average dosage of a second generation anticoagulant necessary to kill a mouse and a rat?
Less than 0.032 oz (1 g) of bait containing Bromadiolone such as Ratimor contains a lethal dosage for an average domestic mouse (0.0643 oz /20 g mus musculus) - that is approximately 25 - 30 % of its daily food consumption.
0.013 oz (5,6 g) of bait contains a lethal dosage for an average rat (0.551 lbs/250 g rattus norwegicus) - that is approximately 30 % of its daily food consumption.
6. How often it is necessary to replace the rodent baits in bait stations if they still appear fresh? For how long shall the bait be available on a specific spot?
The baits in bait stations should be checked regularly, at least daily. If some bait has been eaten it should immediately be replenished. The baits should still be checked for 2-3 weeks after the last consumption of bait occurred, afterwards it is safe to remove the baits and bait stations. If you chose to keep them in place check them every month or even more frequently in order to spot the infestation as soon as it occurs. If the baits dry out or become visibly deteriorated replace them. The baits should be replaced every month or so even if they seem to be fine.
7. How to understand where are rodent's high activity areas?
Check the visible signs of rodent activity such as their paths, droppings and other signs of their activity. Places where they access the house and shelters are also the best places to lay the bait stations with baits. It is also wise to use numerous baits, sometimes up to 2 - 3 dozen bait stations for heavy infestations and depending on the size of the infested area.