Have you ever wondered what do cockroach eat? or what will cockroaches not eat? Cockroaches are omnivores and some of the most diverse eaters in the pest world, but they do have preferences.

Cockroaches are opportunistic omnivores who’ve survived for about 320 million years. They first appeared during the Carboniferous period, long before dinosaurs roamed the Earth.

Worse, without enough water and food, they can live for months. This is why it’s always recommended that you limit their food source and address any excessive moisture issues when you’re trying to get rid of roaches. Let’s find out what do cockroach eat.

What do Cockroach Eat the Most?

Cockroaches prefer to eat sweets, proteins like meat, starches like bread and pasta, greasy foods, and decaying matter like trash. They’ll even eat dead insects, including their nest mates, human hair, and fingernails. Outdoors, they’ll typically feed on decaying matter and dead wood. Surprisingly, they feed on glue, adhesive tape, cardboard, and other non-food items.

Which Food Attracts Cockroaches?

Cockroaches are mainly driven by decaying organic matter, i.e. garbage, and they’re very moisture-driven, so if you see them, either it’s indicative of a plumbing issue, or there’s an opening around the wall that leads out to these plumbing lines. There are a few specific foods that attract cockroaches:

1. Sugar

Cockroaches are highly active around the clock, but scavenging at night requires high energy. This is where sugar comes in, as it’s an easy and accessible form of energy found in most foods, such as fruit scraps, spilt soda, etc.

2. Starch

Starch also has a high sugar content. Still, unlike sugar, which gives these critters an instant rush, starch provides energy over a sustained period of time, making this a better choice for prolonged periods of activity or ties when food is scarce. This can include things like bread crumbs, rice, etc.

3. Grease

Grease contains fats and oil that can be present in a kitchen for a long time, and its residues are more challenging to clean, making it one of the prime food sources.

Fats contain dense calories and fatty acids that cockroaches need to maintain their exoskeletons, composed of lipids and proteins. Grease helps support their physiological functions, including moulting and reproduction.

Do Roaches Eat Dead Skin?

Cockroaches have survived this long by being picky eaters. They feed on anything that provides them with energy, including dead skin. Dead skin is a good source of protein. It’s also a convenient food source that gradually accumulates over time and is nearly impossible to clean. They also feed on other organic materials, such as fingernails and hair, which contain keratin, which is immensely nutritious to cockroaches.

What Does a Cockroach Dislike?

Cockroaches are famously adaptable and resilient. However, even these critters believe a few things are over the line.

1. Strong Smells

Strong scents can often disorient and confuse cockroaches, making it more likely for them to avoid an area if it smells of fragrances such as citrus, peppermint, or eucalyptus, which is also why most commercial cockroach repellents are heavily scented.

2. Cold Temperatures

Cockroaches are cold-blooded, which makes them seek out warmer environments; cold environments slow them down physiologically, causing slower digestion and movement. Prolonged exposure to cold temperatures can kill cockroaches.

3. Cucumber Peels

Cockroaches never tolerate cucumber peels due to their bitter compound, Cucurbitacins, which produces a bitter taste deterrent as a food source. Cockroaches have a highly developed sense of smell, which causes them to be repulsed by the essence of cucumber peels.

In a Nutshell

Cockroaches have been around for a long time, and during this time, they have come to be known for their adaptability to any environment and food scarcity, which speaks to their resilience. Cockroaches will feed on anything as long as it provides nutritional value, which is why they are one of the oldest surviving insects on planet Earth.

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