Human urine does not effectively repel rats. Studies show it fails to deter rodents from food sources, and they do not show fear responses to human scent. While ammonia (present in urine) can be a repellent, the concentration in human urine is too low to act as an effective deterrent.
Rats hate strong, pungent smells that overwhelm their sensitive noses, with peppermint oil, ammonia, eucalyptus, and garlic being among the most commonly cited deterrents, along with the scent of predator urine (like coyote or bobcat). These scents disrupt their navigation and sense of security, but natural repellents often need frequent reapplication as the smell fades.
Wild rats are not used to human contact and will bite when handled or when people attempt to feed them by hand. The nocturnal creatures have also been known to bite sleeping people, particularly children and infants, on exposed body parts such as fingers, hands, toes and the face when foraging for food.
Human urine could potentially deter animals (eg deer, rabbits) that have been conditioned to fear the scents of predators like coyotes. Coyote urine has been shown to be effective in some commercially-made animal deterrent sprays - but I am not positive human urine would be as equally effective. You can certainly try.
Mothballs and peppermint oil--soaked cotton balls also make excellent rodent repellents. Once animals are gone, use foam sealant, steel wool, hardware cloth, or metal flashing to seal entry points. After rodent-proofing a building, live-trap and remove any rats or mice still inside.
Camphor/Mothballs
These contain naphthalene, which release a scent that is disliked by rats.
Amish communities get rid of mice using a mix of traditional, low-tech, and natural methods, focusing heavily on prevention (sealing entry points, removing food sources) and humane trapping, often with handmade cage traps, while also using strong scents like peppermint oil or cayenne pepper as repellents, sometimes alongside cats for natural pest control. They avoid modern poisons to maintain their lifestyle and focus on practical, sustainable solutions.
Repellents and toxic baits
A: No plants have been proven to deter rats from an area and high frequency ultrasonic sounds are not effective for controlling rats in homes and gardens. Human or coyote urine or scent do not repel rats.
A surprising number of creatures—from reindeer to locusts—have a known affinity for human urine. And for some species, this craving for our minerals has dramatically shaped their behavior.
Red fox urine is the all-natural, organic and humane way to deter most yard and garden pests including deer, rabbits, skunk, ground hogs and small rodents. Long used by gardeners, this proven method utilizes 99% pure red fox urine predator scent to trigger the fight or flight response in small animals of prey.
Rats and mice are nocturnal with most activity taking place between approximately one half hour after sunset to about one half hour before sunrise. Garbage is an excellent food source for rodents. Store garbage and rubbish in rodent-proof containers.
Sleeping with the lights on will not effectively keep rats away.
Rats are afraid of human activity, mostly because humans are so much larger than they are. Rats also fear predators such as hawks, eagles, and other birds of prey. Other animals that rats are afraid of include your cat as well as rat terriers and other dogs that hunt rodents.
The strong, acidic aroma of vinegar is another effective rat deterrent. White vinegar or apple cider vinegar diluted with water can be sprayed or wiped around potential entry points. Damp can exacerbate odours, and vinegar can help to neutralise existing rat smells.
Mothballs
The strong chemical smell they give off also makes them effective repellent for rats, but it is also toxic to them. This is because mothballs contain active ingredients like paradichlorobenzene or naphthalene, which are fumigants toxic to both animals and people.
You can use a Dettol spray liquid along with vinegar in equal measures, and spray it all over the rat-infested areas. This strong liquid spray has a pungent smell, which rats dislike and it compels them to move out of the house.
Urine marking serves several functions. It acts as a sexual attractant and advertisement to rats of the opposite sex. Males urine mark frequently, especially when they can smell receptive females. Females prefer the urine of males with high testosterone levels.
Yes, dogs can smell human pee...it's just that (hopefully!) they don't get the opportunity very often. After all, most people are house trained and so the neighborhood should be unrewarding from a dog-smelling-human-pee perspective. When sniffing out pee, dogs follow a particular pattern.
While human urine contains significant amounts of major plant fertilizing minerals, it also contains relatively low levels of pathogens. This suggests that human urine could be used as a liquid fertilizer and pesticide due to its high nutrient content and low pathogen content.
It's possible to repel rats using essential oils such as peppermint oil and other smells that they naturally don't like. Using peppermint oil is one of the easiest ways to keep rats away from your home as long as you aren't giving them an easy food source.
Common pet rodent poisons:
Rats are capable of remembering places where they found food or shelter, and scent trails help guide them back. That's why rodent problems often repeat when entry points, food sources, or odors remain unchanged.
A: Rats are nocturnal, meaning they're most active at night. During the day, they stay hidden in walls, basements, attics, and burrows where they feel safe.
Cinnamon – The strong, spicy scent of cinnamon can overwhelm a rodent's strong sense of smell. Cloves – The intense, spicy fragrance of cloves can be irritating to pests and drive them away from treated areas. Eucalyptus oil – The menthol-like aroma of eucalyptus can be too strong for these little critters to tolerate.
Use peppermint oil, ammonia, and citronella to deter rats. Apply these scents around entry points and nesting areas. Refresh scent barriers regularly for best results. Combine scent deterrents with proper sanitation for maximum effectiveness.