Stored Product Moths, commonly referred to as Pantry Moths, can be a frustrating pest to find in your kitchen. You may first notice a small moth flying around your cupboards, but the real problem is often hidden inside stored food.

Pantry moth larvae can infest a wide range of dry foods, including cereals, flour, rice, pasta, nuts, seeds and dried fruit. Once they become established, they can spread from one food packet to another.

The good news is that there are several practical steps you can take to find the source of an infestation and get pantry moths under control.

What Are Pantry Moths?

Pantry moths are small moths whose larvae feed on stored food products. One of the most common species found in homes is the Indian meal moth (Plodia interpunctella).

Adult pantry moths are small and may be seen flying around kitchens, cupboards and food storage areas. However, the larvae are responsible for damaging and contaminating food.

Pantry moth infestations can be difficult to deal with because eggs and larvae may be hidden inside food packaging, while mature larvae can sometimes travel away from the food source before pupating.

How Do I Know If I Have Pantry Moths?

The first sign of pantry moths is often seeing small moths flying around your kitchen. However, seeing an adult moth is not always enough to identify the source of the infestation.

Carefully inspect your stored food for other signs of activity.

Look for:

Small caterpillar-like larvae
Fine silk webbing inside food packaging
Food that has become clumped or stuck together
Small holes or damage to packaging
Larvae or pupae around cupboards and shelves
Small moths around food storage areas
Webbing or unusual material inside packets of dry food

Remember that pantry moth larvae can sometimes be present without any obvious adult moths being visible.

What Foods Do Pantry Moths Infest?

Pantry moths can infest many different types of dry food. They may be introduced into your home in an already-infested packet and then spread to other food products.

Check products such as:

Flour, Rice, Pasta, Cereals, Nuts, Seeds, Dried fruit, Spices, Baking ingredients, Pet food, Bird seed.

Even unopened packets should be inspected if they have been stored close to an infested product. Pantry moth larvae can sometimes get into packaging through very small gaps.

Where Do Pantry Moths Come From?

Pantry moths are often brought into the home in contaminated food packaging. The infestation may therefore begin with a single packet of food that already contains eggs or young larvae.

Once inside your kitchen, the moths can spread to other suitable food products.

They may also lay eggs in cracks, gaps and other areas close to food storage, making it important to clean the whole cupboard rather than simply throwing away one affected packet.

Pantry moth larvae can also travel away from their food source when they are ready to pupate, so don’t assume that every sign of the infestation will be found inside the original food packet.

What Should I Do If I Find Pantry Moths?

The first step is to find the source of the infestation.

Remove the food from the affected cupboard and carefully inspect all susceptible dry goods. Look for larvae, webbing, damaged packaging or other signs of contamination.

If you find infested food, place it in a sealed bag and dispose of it outside your home.

Don’t simply remove the packet where you found the moths and assume the problem is solved. Check surrounding food products carefully, as pantry moths can spread between different packets and containers.

Once the food has been removed, thoroughly clean the cupboard. Vacuum shelves, corners, cracks and gaps where eggs, larvae or pupae could be hiding.

Empty your vacuum cleaner or dispose of the vacuum contents promptly so that any insects collected during cleaning cannot escape.

Use Airtight Containers for Stored Food

After cleaning the affected cupboard, consider transferring susceptible dry foods into airtight containers.

Sealed containers can help prevent pantry moths from spreading between food products and make it much easier to identify any future infestation.

Keeping cupboards clean and regularly checking older food products can also help you detect problems early.

Try to avoid allowing packets of flour, cereals, rice, nuts and other dry foods to remain forgotten at the back of cupboards for long periods.

Using older food first and regularly cleaning food storage areas can reduce the opportunity for pantry moths to become established.

Use a Pantry Moth Pheromone Trap

A pheromone monitoring trap can be a useful way of detecting adult pantry moth activity.

The trap contains a specialist pheromone lure designed to attract male pantry moths. When moths are caught, this provides evidence that adult moth activity is present in the area.

Pheromone traps are particularly useful because pantry moths can be difficult to monitor simply by looking around the kitchen.

A trap can also help you monitor the situation after cleaning and removing infested food. Continued catches may indicate that moth activity is still present and that further investigation is needed.

It is important to use a pheromone trap designed specifically for the type of pantry moth you are trying to detect. Different moth species respond to different pheromones.

Can Pantry Moths Be Completely Removed?

Getting rid of pantry moths may take some time because different stages of the insect can be present at the same time.

Removing infested food is essential, but it is also important to clean the surrounding area and continue monitoring for further activity.

Don’t be surprised if you see an adult moth after the initial clean-up. Some larvae may already have left their food source and pupated elsewhere.

Continue checking cupboards, shelves and other areas around the kitchen and use pheromone monitoring traps to help identify any continuing adult activity.

Persistence is important when dealing with a pantry moth infestation.

How Can I Prevent Pantry Moths?

Once you have dealt with an infestation, there are several simple steps that can help reduce the risk of pantry moths returning.

Store dry food in airtight containers.
Check new packets for signs of damage or infestation.
Regularly clean food cupboards and shelves.
Remove old or unused food products.
Pay particular attention to flour, cereals, rice, nuts, seeds and dried foods.
Keep pet food and bird seed in sealed containers.
Use pantry moth pheromone traps to monitor for adult moth activity.

Regular monitoring is particularly useful if you have previously experienced a pantry moth infestation.

Need Help Detecting Pantry Moths?

If you’re finding small moths around your kitchen or discovering webbing or larvae in stored food, pantry moths could be the cause.

The most important steps are to identify the source, remove contaminated food, thoroughly clean the affected area and continue monitoring for further activity.

A specialist pheromone monitoring trap can help you detect adult pantry moths and establish whether activity is still present.

Explore Sentomol’s range of specialist moth pheromone lures and monitoring products to help detect pantry moth activity.

And as always, if you have any questions, simply get in touch with us and we can give you advice based on our experience.