One of the questions we are regularly asked is “Should a wasp nest be removed after treatment?”
Bearing in mind that the nest is not dangerous once all the wasps have been dispatched, it is just the structure for the wasps to live in which is made by chewing wood and making a paper mache` type mixture for the building of the structure. It will also only be used to live in for one season, and no other wasps will use it for their home.
In some circumstances a treated wasp nest removal needs to be carried out, but we normally will only carry this out at the first visit if the nest is in an entrance area or poses an immediate risk to the public or our customers safety.
If the wasp nest is not causing any threats, we would normally leave it well alone after treatment. Our reasons for this is that if the nest is left in its present location i.e. where it is built after it has been treated by us. We will only use a professional insecticide (normally but not always a dust) and as such after the wasps have died, the dust will remain active within the nest for a long time as long as it stays dry. Due to its long shelf life the powder will be a future safeguard against any inquisitive wasps from other nests.
At this point it is worth noting that other wasps from nearby nests will attempt to raid and scavenge from the treated nest due to no defence from the original wasps. A few of these scavenging wasps will enter the nest and they too will die by the fact that they have walked in the active, which means that the treated nest is helping to kill wasps from other nests. This also applies in the spring when queen wasps which are emerging from their winter hibernation start exploring potential nesting sites and encounter the treated nest, due to their inquisitive nature they are likely to enter the old treated nest and if they touch any active powder there is a good chance they too will die before they are able to build a new nest of their own.
If you decide that your wasp nest needs removing for any reason, it is better to have the wasp nest treated, and wait for a few days (we advise approx. 48 hours minimum) for the foraging wasps to return to the treated nest where they will die, then it is normally safe to remove the nest.
A lot of my customers are happy to remove the treated nest themselves, and they are advised to wear gloves and a mask due to the insecticide used.
We will charge a fee to remove a dead nest, which is a separate charge to the treating of the nest, prices are shown on our Charges tab.
As we have stated in our other wasp sections if a wasp nest is removed too soon before all the scavenging worker wasps are killed the returning wasps are very likely to build another nest, albeit just a shell as there will be no queen to lay eggs. This also applies if the customer uses a quick knock down treatment such as a wasp nest foam treatment and removes the nest straight away.
If you decide to remove a wasp nest yourself, the first thing to ensure is that the nest is not in use. If you are unsure whether the wasp nest is live, do not attempt to remove it or touch it. The smallest vibrations are enough to provoke wasps into attacking. If in doubt call your local pest controller and seek advice. If, however you think it is a dead nest and you wish to remove always wear gloves and a mask, and place the old nest into a bin bag, seal the bag and place in the waste bin.
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