Ivermectin Use & Dilution Guide for Mice and Rats

Ivermectin Use & Dilution Guide for Mice and Rats

Introduction

Ivermectin is a medication commonly used in livestock to treat both external and internal parasites. Within the mouse and rat keeping community, it is most often used to treat:

  • Lice
  • Mites
  • Pinworms

This guide covers basic dilution and usage recommendations for ivermectin when treating small rodents. Ivermectin can be applied externally using a spray bottle or administered orally through drinking water, making it a practical option for treating multiple animals efficiently.

━━━━━━━━━━━

Dilution Guide

Ivermectin is available in several different concentrations and formulations. This guide specifically refers to 1% ivermectin (5mg/mL).

The dilution used may vary depending on:

  • The age of the animal
  • Severity of infestation
  • Overall condition of the rodent

Recommended External Dilutions

  • 1:10 Solution
    Best for young animals and mild/general infestations
  • 1:5 Solution
    Recommended for adult animals or moderate infestations
  • 1:4 Solution
    Used for severe infestations or larger individuals

For routine use, a 1:5 to 1:10 dilution is generally recommended.

Recommended Oral Dosage

  • Mice: 8mg/L
  • Rats: 25mg/L

This provides an approximate dosage of:

  • 2.9–4.0 mg/kg

━━━━━━━━━━━

External Use

For external treatment, ivermectin solution should be lightly sprayed directly onto both the animal and its enclosure.

Treatment Schedule

  • Treat once weekly
  • Continue treatment for at least 4 weeks
  • Replace bedding weekly during treatment

Store diluted ivermectin in a dark location and shake thoroughly before each use.

Important Application Notes

  • Animals should appear lightly misted, not soaked
  • If bedding or fur becomes wet, use a finer mist or spray from a greater distance
  • Avoid spraying food and water sources directly

Ivermectin should not be used on:

  • Pregnant animals
  • Rodents under 4 weeks old
  • Nursing litters

Young mice and rats should be fully weaned before treatment is used on either them or their mother.

━━━━━━━━━━━

Oral Use

Oral ivermectin treatment is primarily used for internal parasites such as pinworms.

The medicated water should be offered:

  • 4 days per week
  • For a minimum of 5 weeks

External treatment is generally recommended as the first treatment approach whenever possible, as it is typically considered safer and more effective for external parasites.

━━━━━━━━━━━

Where To Buy

Ivermectin can commonly be purchased:

  • Online
  • Through farm supply stores
  • At livestock feed stores

One commonly used product is:

━━━━━━━━━━━

Important Warning & Disclaimer

This guide is intended for general educational and informational purposes only and should not be considered veterinary or medical advice.

Dosages, treatment duration, and medication safety can vary depending on:

  • Species
  • Age
  • Weight
  • Overall health condition
  • Underlying illnesses

Always consult a qualified exotic veterinarian before administering medications to any animal.

By using this information, you acknowledge that treatment decisions are made at your own discretion and risk. The author and distributor of this guide assume no liability or responsibility for illness, injury, incorrect dosing, adverse reactions, loss, or damages resulting from the use or misuse of the information provided.

Back to blog