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Beach writes,

How long does Demon WP take to kill German roaches?

I have been spraying Demon WP (every weekend) for a month now. There are less and less roaches. Now, I am just wondering how it works on them. Are they still able to lay eggs?


You should not need to spray indoors more than once a month for roach control if you are using Demon WP. Using Demon WP alone will not stop roaches from breeding and laying eggs. We recommend that you use an IGR (insect growth regulator) such as Gentrol to help stop juvenile roaches from reaching sexual maturity. We also recommend that you use a roach bait gel such as Advion Roach Bait Gel in cabinets, around counter tops, in drawers and around appliances to get rid of the roaches that hide in places that cannot be sprayed. By using all three products together, you will have a roach control program that will effectively get rid of your roach infestation. We offer all three products together in our Roach Control Kit #2. How long it will take to get rid of the infestation will depend on how heavy the infestation is and how good the sanitation is in your home. You can expect it to take 6 weeks to several months.

Answer last updated on: 12/09/2010

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