How to eradicate cockroaches? Just when you have everything sorted with your kitchen, along scurries a cockroach! As a Pest Controller, I specialise Cockroach Control. I am often asked how do you get rid of these persistent “nasties”. So I thought I would pass on a few useful tips.
Firstly, to get rid of the Cockroaches you have to understand them a little. The cockroach is one of natures' best survivors!
Here are few reasons why, (i) they can go for long periods without food. So when the going gets tough they just hunker down somewhere and wait. (ii) The female cockroach can carry 40 young with it. When she get stressed she lays the young. (iii) Cockroaches take around a month to reach sexual maturity.
So if you put these two last facts together ONE MONTH = A SERIOUS PROBLEM!
Secondly, there many different cockroaches in New Zealand. They all behave differently and they need to be treated differently! There are four main types found in homes. Two are bush types being the native and the Gisborne. These two types live mainly inside, and come inside when the weather is cold! Cold as they prefer the outside temperature and find it inside. The other two are the German and American. These types both prefer warm areas, such as fridge motors, hot water cylinders etc.
Thirdly, Cockroaches living inside need at least two of three things, food, water and warmth. Given these conditions an infestation can quickly become significant if left unchecked! A sign that an infestation has become significant is cockroaches being seen away from their sources of food and warmth e.g. office next to kitchen, up stairs bedroom etc
How to treat cockroaches? (a) Product : Incorrectly applied product may make the situation worse not better! Remember what the female does when she is stressed? Yes lays her young, 40 of them and then in thirty days you have 40 times the problem! Typically people tell me they sprayed and the large ones went away, then soon after there were many more small ones! Cockroaches surviving again! Remember that the products available in the supermarket are low toxicity ( less effective to cockroaches), have short length of action and will not access the difficult to get areas that cockroaches prefer!
Application: (i) You need to get into the areas that the cockroaches prefer. This may not be so hard for fridge motors, but they frequently they prefer areas that you can not access with supermarket products. (ii) Spray the areas cockroaches travel. These areas need to be covered for the entire house or buiness. Upper and lower skirtings, doorways and window frames. In the case of the bush cockroaches you need to spray the exterior lower skirting boards, window frames, doorways and garage door. (iii) leave gel bait for the young that have been laid. In areas where they favour but not where you have sprayed ( spray renders the bait ineffective) , leave gel bait for the recently laid young. These baits are rich in sugars and have a similar insecticide to that used in cats flea collars. (iv) Monitor the situation. Keep and eye out where the animals like to live.
Safety: Remember to be as safe as you can! Always wear a mask, gloves and eye protection!
Myths: (i) If I stand on a cockroach I will make the problem worse, as it release many more young? If you stand on a cockroach you will kill it and its young. (ii) Cockroaches are a sign of a clean house? Cockroaches need food, water and warmth, they dont mind about the state of your house or business. (iii) I don’t need to worry about cockroaches? Cockroaches carry pathogens harmful to humans. They almost certainly travel over your food preparation surfaces at night. Cockroaches are a health risk.
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