Do Roaches Like Coffee Grounds?( No! See Why)

Do Roaches Like Coffee Grounds?

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Do Roaches Like Coffee Grounds?

Roaches are insects that live in the home and feed on human and pet food and other organic matter. You can find them throughout North America and Europe.

However, they prefer warmer climates. Roaches infestations usually happen when there is a lot of moisture or clutter. 

No. Roaches dislike coffee grounds. Coffee grounds are often used as the main active ingredient in homemade roach baits.

This is because it’s believed that they are one of the few foods that will attract German cockroaches.

Some strongly suggest using used grounds instead of new ones to be safer for human consumption.

However, using the coffee ground for this purpose is ineffective, if not completely useless.

Coffee grounds have no nutritional value and therefore cannot serve as a source of food for cockroaches.

There are much better alternatives available commercially to lure these pests out of our homes—like Invicta Gold Cockroach Bait.

Which scientists proved highly effective by scientists at Iowa State University, as well as many customers who have given it positive reviews.

What Smells Do Roaches Hate?

They dislike many smells but get used to some quickly.

Even though these are the smells they hate, people often like them or find them pleasant for other reasons (such as oranges).

Do Roaches Like Coffee Grounds?

They dislike many smells but get used to some quickly. Even though these are the smells they hate.

People often like them or find them pleasant for other reasons (such as oranges).

A list of what roaches don’t like:

Citrus Oils: The oils within the rinds of oranges and other citrus fruit are what roaches hate about those fruits.

If you want to apply a layer of protection against roaches, cut one orange into eighths, place them on a baking sheet overnight, then set out near entry points to your home.

It’s not only the smell that roaches don’t like; it’s the taste as well.


Roaches have sensory organs and bodies that respond to taste and smell, and citrus oil can render them unable to eat.

Cinnamon Oil: The essential oil derived from cinnamon trees’ bark may even be more effective than citrus oils at getting rid of roaches.

You can make a cinnamon spray by boiling ground cinnamon in water (to release its oils), adding one ounce of dishwashing liquid (to help it adhere to surfaces) and 1 quart of cold water.

Then spraying this solution on all door frames, window sills, sinks, drains and especially near any cracks or crevices where roaches might enter your home.

Soaps and Detergents: People usually think that soaps have a sweet smell because their scent is commonly known as “clean,” but soap smells are unattractive to roaches.

It’s not only because of how soaps smell, though; it’s also because soaps dry out their exoskeletons (the layer outside their bodies that keeps them hydrated).

Beer and Alcohols: Even spilled beer will do a number on roach populations if left undisturbed for several days.

Many people swear by using empty beer bottles as traps for catching roaches (and other bugs).

Dropping some detergent in the bottom first to break through any waxy barrier before adding the alcohol.

However, according to one study, regular consumption of standard alcoholic drinks such as beer or wine does not affect cockroach behavior.

Garlic and Onions: The powerful odor of garlic and onions causes roaches to have difficulty breathing by clogging their spiracles.

(The small holes on the sides of their bodies that take in oxygen).

When a roach’s spiracles block, it walks with its body raised so that its chest is slightly exposed above the ground, making it easier for them to breathe.

This makes it easy to identify where they walk or hide.

“Musty” scents from plants such as bay leaves, eucalyptus, and certain types of cyclamen:

In laboratory experiments involving several insects, they found extracts from these plants to be especially effective at repelling cockroaches.

How Do Coffee Grounds Kill Roaches?

Coffee grounds kill roaches by producing a chemical reaction that kills the roach.

Roaches cannot handle the acidity of coffee grounds because their exoskeletons are porous, and they have low metabolic rates, which do not help them handle stomach acids.

The chemicals used to produce coffee also suffocate roaches by inhibiting their ability to breathe. For this to happen, the coffee has to be fresh, and the roaches must ingest it.

The reason you would want to use coffee as a pesticide is that it is cheap.

It’s probably about ten times cheaper than regular pesticides because all you need is what’s left from making your morning cup of joe.

Coffee grounds need to be fresh, though. After about a few days, the coffee grounds lose their toxicity.

Other substances could kill roaches instead of coffee if you don’t want to go through the trouble of making your pesticide. Most commercial pesticides will do the trick.

The most popular choice is boric acid, which is much more expensive than coffee but does not have any residues on surfaces after it dries up.

Unlike some other commercial pesticides. However, it would be best to use caution when making your pesticide use these products because they can also be hazardous to humans.

Can Coffee Grounds Attract Bugs?

Yes. It attracts bugs such as worms, snails, slugs, millipedes, etc. Coffee grounds attract not only bugs but can also keep them away because of their high acidity levels.

The nitrogenous components in the coffee ground attract the bugs to the soil, where they mix coffee grounds with other ingredients for composting.

For example, earthworms love coffee grounds;

Especially if there is no more room at the top since worms will travel several feet deep than usual when they sense elements such as caffeine.

Specific types of snails and slugs that feed on succulent plants like strawberries.

Or seedlings also enjoy daily doses of leftover coffee ground from your morning brew early in the morning.

At the same time, millipedes find their nutritional value essential to expand their diet.

This may decrease the earthworm population when there is a high coffee ground count because worms travel further and deeper than usual.

What Sounds Do Cockroaches Hate?

Cockroaches hate the sound of:

  • Buzzing/humming – Bees and flies and other flying insects such as wasps and moths.
  • Splashing – They hate the sudden sound of water because it could indicate flooding or a leak. This is also why they are usually called ‘water bugs’ in some languages.
  • Cracking/crunching – Glass, wood, or any other type of thin, delicate surface can make them run for cover since it means something hard might fall onto them.

Splintering wood may attract cockroaches if they think there’s food underneath it.

However, even these tiny sounds are enough to cause cockroaches to scatter away from their shady spot under your floorboards or stove.

  • Hissing – Cats, snakes, humans, or anything that hisses.
  • Click-clacking – Nails on a chalkboard is enough to make these insects scatter.

Also, crinkling foil (which is what the sound of this would be like) causes them to run out of food sources.

It’s believed that cockroaches are extremely sensitive to the movement of air molecules, which enables them to tell where they are going in total darkness.

Since they’re so sensitive to how air moves around objects, it’s easy for them to detect when something is blocking their path.

This explains why you can’t get rid of them all by setting out poison bait traps since even if they eat the bait, they will hear it hitting their insides and hide somewhere else.

  • High-pitched or screechy noises – Think nails on a chalkboard. Anything high-pitched is too much for even cockroaches to bear.
  • The word ‘cockroach’ – The mere mention of the name has these insects running in terror. They even hate the names ‘roach’ and ‘palmetto bug.’

Spiders are one of their predators. Still, other bugs like centipedes that could eat them are enough to send them scattering away from where you don’t want them.

Does Lemon Scent Repel Roaches?

Yes, the lemon scent repels roaches. Roaches hate lemons and will avoid a home with lemon oil if they can smell it.

Lemon-scented products are not as effective as pure lemon juice, but the scent of only the peel is enough to deter roaches from your home.

Most people believe that this is a myth because they do not know how many pests there are or how different their relationship with smells can be.

Nothing that I know of has yet to show that any single thing will work for 100% of all bugs out there. So occasionally, something might work for some bugs, but not other bugs.

If you find lemon juice a little too acidic for your taste, you can use a diluted solution in water instead.

Dry the surface where you’ve sprayed it before letting any pets or small children in that area.

If you don’t want to use lemon scents because of allergies or other reasons, there are many distinct scents out there that will help repel roaches.

Most people who have tried all-natural home remedies swear by peppermint oil as the best way to get rid of roaches.

Does Pine Sol Kill Roaches?

Yes, Pine-Sol can kill roaches. Insects exposed to Pine-Sol show immediate narcotization, followed by death.

The product does not need ingestion, and the chemical reaction in the roach’s stomach gets triggered upon contact with Pine-Sol.

Those who have used it attest that a lethal concentration of the chemical in the insecticide kills roaches within seconds.

However, keep in mind that this will only workaround areas where you would use Pine-Sol for cleaning, such as on countertops or floors.

But if they come near food or areas where you wash dishes, it won’t be good for humans. Thus, ensure you clean up after treating these places with Pine-sol.

People have found success in using it around the kitchen and in areas where roaches crawl.

The chemicals used are usually known as terpenes, which are natural hydrocarbons.

The Pine-Sol website states ingredients include d-limonene sourced from orange peels, alpha-pinene from pine trees, linalool derived from flower oils,

And eucalyptol extracted from Eucalyptus leaves, thymol isolated from thyme plant oil, and camphor got from the laurel tree.

Each has different functional groups, including ketone, alcohol, ether, aldehyde, halide, and alkyne.

When ants or other insects contact any chemicals used, the hydrocarbon groups basically “melt” or dissolve the insect’s exoskeleton.

Do Roaches Like Vinegar?

Yes, roaches like vinegar, and they will eat it. Any food that has high sugar or yeast content will attract roaches. Therefore, vinegar works so well.

It’s only strong alcohol that roaches eat with relish. The important thing to remember is that this process works best as a preventative measure.

Doing it after they are already in your house will only help keep them out of those areas. However, there is zero guarantees that they won’t find those tasty treats and return.

Why Do Roaches Hate Coffee Grounds?

No, Dawn dish soap does not kill roaches. As for cockroaches, Dawn Dish Soap might work as a repellent but has never given proof to kill roaches.

Other soaps or detergents work better for roaches because they contain ingredients that dissolve their exoskeletons.

Dawn dishwashing liquid does not have such active ingredients and is primarily used as a hand soap to clean greasy dishes.


Roaches get attracted to anything with a strong smell. Coffee grounds don’t have any scent.

Thus, they won’t attract roaches, but they will repel them if you sprinkle some around your house. Lemon scents also work as an insecticide.

You can use them in the kitchen or bathroom to contact food or toiletries like soap, toothpaste, etc. 

Pine-sol is another natural repellent that works well for killing roaches because of its pine-like fragrance.

However, you should only spray both vinegar and lemon oils near cracks and crevices.

These liquids could damage furniture or other surfaces on which they may spill; vinegar is especially corrosive when mixed with chlorine bleach.


Hi! I I faced many questions from customers about different products, and there was hardly any help on the internet. After learning all the things about these products as a manager the hard way, I decided to start a blog and help other people.

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