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Dear Bernice,
Just an advice from a bronze and patina specialist that does this
repeatedly over the years.
First, using any pesticide will effectively kill the wasps but
potentially damage the sculpture patina.
Therefore, fiscally removing the nest by water of vapour jet stream is
a reasonably good option following some logical steps.
Deep night intervention will ensure some passivity on wasps self
defence reaction.
So good operator protective thick clothes covering risks of punctures
is a prerequisite (let someone else double check before stepping on
the operating area).
Use a powerful jet stream fit with a sharp nozzle able to cut trough
light wood (test it elsewhere) and a long handle to be able to
approach as close as possible from a lateral angle to cut the nest
from the bronze surface not jetting on the bronze too hardly. Wetting
the bronze will not change anything from an ordinary rain, but
applying the nozzle front to the surface will affect rapidly the
patina surface (as any chemical will do with after mentioned
treatments).
It is good the day before night to come to plan the direction of the
nozzle movements when plenty of light is available.
When the nest is on floor, then use pesticide to fill and prevent
restoration of their habitat at dawn.
Then you may place it on a disposable area. Fire brigade are usually
quite incline to deal with this step as for the killing if you wish.
Finally days after, when any activity is definitely over, you can come
manually to remove all remaining traces of the nest as reported to
prevent any return.
If needed, you can always repeat this process.
Remember that bronze hollow outdoor sculptures are potentially always
quite good nest pest of all kinds.
Hope this help.
David Cottier-Angeli
www.cottiermetal.com
Associated Member of the Swiss Chamber of Technical and Scientific
Forensic Experts
5C Route des Jeunes
CH-1227 Geneva
Tel +4122 300 19 55
Mob +4179 319 319 0
Skype cottiermetal
Does anyone have any recommendations on how to remove a wasps nest
from a steel and bronze outdoor sculpture? It seems that the nest is
embedded somewhat within the sculpture so there is limited physical
access. I’m starting to think a pesticide will be necessary…
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