How long does mouse poison paste take to work? - briefly
The paste typically starts killing rodents within 12–24 hours after they eat it, and most deaths occur by 48 hours.
How long does mouse poison paste take to work? - in detail
The active ingredient in most rodent bait gels is an anticoagulant, typically bromadiolone, difenacoum, or brodifacoum. After a mouse ingests the paste, the compound interferes with vitamin K recycling, preventing blood clotting. Clinical signs usually appear 24–48 hours after consumption, and death typically follows within 2–5 days.
Several factors influence the exact interval:
- Dosage: A larger dose shortens the latency period; a sub‑lethal amount may extend symptoms beyond five days.
- Species and size: Smaller rodents metabolize the toxin faster, so they often succumb sooner than larger ones.
- Health status: Malnourished or stressed individuals may show earlier signs.
- Formulation: Gel baits with higher bioavailability act more quickly than solid blocks.
Observable effects progress as follows:
- 12–24 hours: No outward symptoms; the mouse continues normal activity.
- 24–48 hours: Lethargy, reduced coordination, and occasional bleeding from minor wounds.
- 48–72 hours: Visible hemorrhages, pale mucous membranes, and severe weakness.
- 72 hours–5 days: Progressive internal bleeding leads to collapse and death.
If the paste is placed in a concealed location, mice may take several hours to locate it, adding an additional delay before the pharmacological timeline begins.
Safety considerations:
- Use bait stations to limit exposure of non‑target animals and humans.
- Replace baits after five days if no mortality is observed, as resistance or insufficient consumption may be present.
- Dispose of dead rodents promptly and disinfect the area to prevent secondary contamination.
In practice, expect the first signs within one to two days after a mouse has eaten the gel, with mortality usually completed by the end of the fourth day under optimal conditions. Adjust expectations if environmental variables differ.