?What is a muskrat

The muskrat (Ondatra zibethicus) is a semi-aquatic animal that lives along riverbanks and lake shores, where it actively burrows. It is larger than common mice (800–1,600 g). It produces a distinctive musky secretion from special glands, which gives it its name. Its main problem is damage to water infrastructure through burrowing.

Muskrat life cycle

It reproduces rapidly: females reach sexual maturity at three months, gestation lasts 21 days, and they produce 5–12 litters per year, with 6–14 pups per litter.

Where muskrats occur

They occur worldwide and are common in Saudi Arabia, the Gulf, Egypt and across the region, in warehouses, cities and industrial areas.

Damage and risks associated with muskrats

Their extensive burrowing weakens bridges, dams and canal walls. In some areas, they transmit leptospirosis and tularemia.

Signs of muskrats

Signs include large oval droppings (8–20 mm), gnaw marks on walls, wires and packaging, greasy smear marks on walls, footprints, and a distinctive urine odor that glows under UV light.

Where muskrats are found

They occur along riverbanks, lake shores and canals. They build lodges from plants above the water or dig tunnels into banks.

Muskrat control methods

Seal all openings larger than 6 mm with metal or concrete. Raise stored goods off the floor. Use tamper-resistant bait stations and mechanical traps, and monitor continuously.

Muskrat control products

Use first-generation anticoagulants (warfarin). For resistant cases, use second-generation products (brodifacoum, bromadiolone). Secure stations are required for second-generation anticoagulants.

Food-facility control requirements

FSSC 22000 V7: rodent droppings or signs in a production area are an immediate non-conformance. A monitoring-station map is mandatory and must be updated regularly. BRCGS: immediate major non-conformance.

A fact about muskrats

Muskrats can voluntarily adjust their heart rate and blood distribution underwater. They slow their heart to 10–15 beats per minute while diving and redirect blood from their limbs to their heart and brain, allowing them to remain underwater for up to 15 minutes.

Frequently asked questions

Q: What is the fastest way to get rid of muskrats?

A: There is no sustainable quick fix. Effective control means sealing entry points, removing food and water sources, using a professional bait program and monitoring continuously.

Q: Are baits alone enough?

A: No. Baits without sealing entry points and removing available food solve the problem only temporarily. Integrated control is essential.