Answer
Oct 09, 2013 - 06:39 PM
This kit contains everything you will need to treat an average size house 2-3 times. Depending on how much of each product you use, and where you use it.
The Demon WP 4 pack has enough to spray 4-6 times if you use 1/2 - 1 gallon each time you spray.
The individual products will last up to 90 days, the boric acid dust will last about 8 months.
How long the cockroaches are gone after you treat depends on several factors, mainly how clean you keep the house, and most importantly, what species they are and where they came from.
Before you start spraying, it might help to know what species they are, and also what their habits are, so that you can do a better job and get longer results.
There really is not an exact answer to your question, but if you keep everything tidy and there is not a continual invasion from somewhere, you could keep them away for quite a while.
We normally recommend to do preventive spraying or some kind of treatment at least every 90 days.
Ron
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