She swears by this | May 30, 2025

st repellent and why they are an excellent choice for those seeking eco-friendly solutions.
The Science Behind Using Onions as a Pest Repellent
Onions contain sulfur compounds, which are responsible for their pungent smell and taste. These compounds, such as thiosulfinates and sulfoxides, are known to have insect-repelling properties. The strong odor of onions can interfere with the sensory receptors of pests, making it difficult for them to locate food or navigate their environment. Additionally, some studies suggest that these sulfur compounds may have antimicrobial properties, which can help in deterring pests that are attracted to decaying organic matter.
How Onions Deter Rats and Mice
Rats and mice have a keen sense of smell, which they rely on to find food and avoid predators. The strong odor of onions can be overwhelming for these rodents, making areas treated with onions less attractive to them. To use onions as a deterrent, you can place slices or chopped onions in areas where you suspect rodent activity, such as near entry points, in cupboards, or along baseboards. It’s important to replace the onions regularly to maintain their potency.
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