Wax Moth Killer Nematodes

What are Wax Moths?

Wax Moths produce grubs that can cause critical damage to Bumblebee colonies. The moths may lay eggs on the exterior of the outer cardboard casing of the Bumblebee colony. This is a common place to find freshly formed grubs, as they often congregate in numbers on the side of the box. Wax Moths may also lay their eggs outside of the Bumblebee colonies, on the wood of the Beepol Villas. In either scenario, if left untreated, the eggs will develop and the hatched Wax Moth grubs will proceed to move inside and destroy the Bumblebee colonies.

What are Wax Moth Killer Nematodes and how can they help?

Naturally and safely control your Wax Moth infestations, and protect your Bumblebees, with our Wax Moth Killer Nematodes, which are deadly to the Wax Moth grubs but safe to humans and wildlife. The nematodes enter the grubs via a natural opening, like the mouth, and feed on the contents of the grubs. A natural bacterium is produced by the nematodes inside the grubs, which kills it. Infected grubs will be completely broken down by the nematodes and will often turn brown. The nematodes also reproduce inside the grubs, releasing more nematodes into the surrounding area. 

When should I apply these nematodes?

Apply the nematodes as soon as Wax Moth grubs are observed. Do not apply before they are present, as nematodes will not survive for long in this type of environment. Wax Moth activity normally starts in June, but may begin earlier in warm conditions. Start monitoring Bumblebee colonies from May for Wax Moth activity.

How many nematodes do I need?

One packet of these 25million nematodes will treat one colony of Bumblebees.

What conditions do the nematodes require?

Choose a humid or wet day to apply your Wax Moth Killer Nematodes. Nematodes are UV-sensitive and will not survive long when exposed to bright, sunny conditions. Apply the nematodes early in the morning or early in the evening in order to utilise the optimum humidity levels. Avoid application in frosty conditions

How do I apply my nematodes?

1. Ensure you have closed the sliding door of the Beepol Bumblebee colony the night before application to keep the bees inside. Proceed to apply the nematodes the following morning.

2. Open and empty the contents of your 25 million sachet of nematodes into a bucket or container of 2.5 litres of water (make sure the water is tepid and not freezing cold to avoid shocking the nematodes) and mix thoroughly. 

3. Fill your sprayer with the mixed 2.5 litres of nematode concentrate and add another 5.5 litres of water so you are left with 8 litres of nematode solution (remove any filters from the sprayer and use a coarse or wide nozzle aperture). Hand held sprayers should suffice, with filters removed, or use our Nema Super Sprayer or 8/15 Litre Pump Action Sprayers for optimum nematode application.

4. Finally, apply and spray the nematode solution directly onto the Wax Moth Grubs.


Apply the nematodes directly onto the grubs on the outside of the colony. They will be present either on the outer cardboard casing, or on the wood of the Villa outside the colony, so apply as relevant to your infestation. The grubs are often found down the sides of the internal area of the wooden Beepol Villa.

Thoroughly spray and re-spray the solution to soak the Wax Moth grubs with nematodes.

5. Once nematode spraying is complete, open the sliding door of the Beepol Bumblebee colony to release the bees. Make sure you stand back after you have opened the door, as the bees may be aggressive at first.

For severe infestations, or new infestations, repeat the treatment.

Keep monitoring the Bumblebee colony for future Wax Moth attacks and reapply Wax Moth Killer nematodes when required.

Can I store nematodes?

You can store unopened nematode packs in a fridge but it is best to ensure you apply your nematodes as soon as possible for the best results. The nematode solution cannot be stored or re-used once it is mixed.