Monday, February 20, 2012

Cluster Fly Season Starts

Cluster flies have not started clustering yet but they are soon likely to begin seeking shelter in the dark dry places within homes and other buildings. Clustering starts at end of February - middle of March in New Zealand. They squeeze in through cracks around windows and doors, loose weatherboards, soffits, eaves, vents, louvers and other similar gaps.

Prevent cluster flies clustering in your home
If you have had cluster flies invade your home previously, now is the time to act. It is probably too late to control the fly larvae in the soil where they parasitise earthworms. But NOW is the time to spray the exterior walls and entry points of at risk buildings with a long lasting residual surface insecticide such as Kiwicare NO Bugs Super. Prevention is better than cure when it comes to controlling cluster fly infestations. NO Bugs Super will remain effective for several months reducing, flies that might enter the buildings and stopping clusters forming.

Cluster flies are more likely to enter structures on the warm north facing side of buildings so concentrate your treatment there, but don't limit it to that side. Spray all entry points and any areas where clusters formed previously. Clusters will not necessarily form where they did in previous years. They may choose other buildings this year. So if your neighbour had problems previously, you may be wise to take precautions.

It has been a year where soil moisture levels have been kept relatively high in many parts of the country. It is yet to be seen how this will affect cluster fly numbers. There is a suggestion that as it will have benefited earthworms (the food of cluster fly larvae) and so it may mean a lot of cluster flies.

Be prepared.

"Waiter! Waiter! There's a fly in my soup."
"Sorry Sir. I must have missed that one."

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