Are Moths Attracted to Light: Facts and Fiction

The image of a moth drawn irresistibly to a flame is familiar, immortalised in the saying “like a moth to a flame.” But does this proverb hold true in your London home? Can leaving your lights on at night actually attract moths and lead to an infestation?

With years of experience dealing with moth infestations, we at Moth Exterminator London can offer some surprising insights into pests in our city and give you the answers you are searching for.

The answer is both yes and no. Some moth species are indeed attracted to light, but not for the reasons you might think. Recent studies, like those published in CNN and The Guardian, suggest that these moths use light sources, particularly the moon, as navigational tools. They maintain a constant angle relative to the light source, allowing them to fly in a straight line. However, artificial lights, especially those closer to the moon, disrupt this navigation system. These species from the Lepidoptera order may appear attracted to the lights, but, in reality, they become disoriented and confused. Moths drawn to a bright porch light may circle it endlessly rather than seek it out as a source of comfort or sustenance.

While the “moth to a flame” myth holds some truth for specific moth species, it’s irrelevant to the common household pests we encounter in London. Clothes moths and Indian meal moths, the culprits behind those tiny holes in your favourite sweater or pantry staples, are not attracted to light. Keeping your lights off won’t keep them away.

Instead, let’s focus on the actual attractants that bring these unwanted guests into your home:

These fabric-loving pests are drawn to:

• Natural fibres: Clothes moths prefer natural materials like wool, cashmere, and silk, seeking these materials for food and egg-laying.
• Dirty laundry: Perspiration and food stains left on clothes can attract moths, providing a food source for larvae.
• Improperly Stored clothing: Clothes left undisturbed for long periods in dark closets or drawers become a breeding ground for moths.

These unwelcome pantry raiders target:

• Open food containers: Unsealed grains, nuts, dried fruits, and pet food are a moth’s buffet.
• Expired food: Pantry moths are particularly attracted to old, neglected food items.
• Cracks and crevices: These small spaces provide ideal breeding grounds for moths and their larvae.

Read also: What are the different types of moths?

Several factors can lead to a sudden surge of moths in your home:

• Migration: Certain moth species migrate seasonally. If you live in an area on their flight path, you might experience a temporary increase in moth activity around these times.
• Population Growth: Pantry moths can reproduce rapidly, especially in warm weather. A sudden increase in moth sightings could indicate a hidden infestation within your pantry.
• Accidental Introduction: We often unknowingly bring moths into our homes. Infested food products, secondhand clothing, or even cardboard boxes can harbour moth eggs or larvae.

For more information, you can also check our previous blog posts on “Where Do Moths Come From in the House?” and “What Attracts Clothes Moths?

Not every moth sighting warrants an immediate call to the exterminators. A lone moth that flutters in through an open window is likely just a harmless visitor. However, there are tell-tale signs of a full-blown infestation:

• Holes in clothing or fabrics: Clothes moths leave small holes in your favourite sweaters, scarves, or blankets.
• Cast skins: Look for tiny, brown casings shed by growing moth larvae.
• Cocoons: Moth cocoons, often mistaken for spiderwebs, might be present in cupboards or on clothing.
• Live moths or larvae: Seeing adult moths fluttering around your pantry or finding tiny, white caterpillars in your food are definitive signs of an infestation.

If you notice these signs, don’t hesitate to contact Moth Exterminator London. Our experienced team will help you identify the specific type of moth and recommend the safest and most effective course of action.

Remember, a proactive approach is crucial when dealing with moth infestations. By understanding what attracts these pests and taking preventative measures, you can keep your London home moth-free and keep your clothes and food safe.