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Cypermethrin Liquid Concentrates

Liquid concentrates and wettable powder concentrates each have certain properties that make them useful tools in pest management.  There are specific situations that require the use of Cypermethrin in a liquid concentrated form, instead of wettable powders.

Summary of Cypermethrin Liquid Concentrates

Wettable powder concentrates are popular with pest control service companies for three major reasons: long residual, better initial knockdown of pests and more bug killing power left on sprayed surfaces.  (On a porous surface, one third of EC products are not absorbed; 100% of wettable powder solution usually not absorbed.)

Some of a wettable powder's good properties can actually work against the pest control technician.  The main concern (when using Cypermethrin in wettable powder formulations) is the visible residue left behind after the bug spray has dried.
Visible residue and permanent stains are not to be confused.  Many pest control companies have found themselves in disputes with their customers because this difference (visible residue vs. stains) was not explained or was not explained in advance.  A stain either damages a material or is very difficult to remove without causing damage to materials.  A visible residue is usually easy to remove with a damp cloth.

Wettable powder residue can be removed simply by cleaning the sprayed area with a damp rag.  To avoid problems with this residue, use an emulsifiable concentrate formulation.  You can still have the benefits of Cypermethrin without the headache of a dissatisfied customer.  An emulsifiable concentrate (usually designated by "EC" in the pesticide insecticide name) usually dries to an invisible finish.

In today's society, knowing that an insecticide has been sprayed in a certain room or area can often cause undue panic, complaints, etc.  There are many who believe that all pesticides are evil and that there is no safe way to control or kill bugs, spiders or other pests when using a pesticide in any form.  Spraying with a wettable powder solution indoors often results in an unhappy customer because they see the dried product on dark surfaces.
If care is taken, there is really no need for a visible residue.  Spraying cracks, crevices, entry points and hot spots (beneath appliances, etc.) is better pest management.  It is usually baseboard jockeys that get themselves into trouble with a WP product.  

There are other choices other than using products that leave a visible residue.  Liquid concentrates (emulsifiable concentrates, microencapsulated concentrates, suspension concentrates) leave very little or no visible residue. 
Alternatives to Wettable Powders
By not using Demon WP or Cynoff WP, you do lose the super long residual and fantastic knock down of a WP formulation.  To counter this loss, continue to use Cypermethrin liquid concentrate sprays; Cypermethrin has a better initial knock-down than many other insecticide sprays.

Cynoff EC, Demon Max (formerly called Demon EC) and Four Ounce Cypermethrin all contain the same active ingredient at nearly the same strength.  Cynoff EC is almost odorless, the other concentrates have very little smell.
Everyone's nose and sensitivities are different.  For the most part, a liquid Cypermethrin pesticide solution (made from an emulsifiable concentrate) does not leave behind an offensive odor.  (Many people hold their noses in distain when they see a technician enter a room with his sprayer.  If the technician were to spray with water, these same people would claim that they smelled something offensive.)

Alternatives to Wettable Powders

Soluble Powders    Microencapsulated Concentrates   
Emulsifiable Concentrates    Suspension Concentrate

Summary of Cypermethrin Liquid Concentrates

When spraying indoors where dark baseboards or flooring are present, use Demon Max or Cynoff EC instead of Demon WP or Cynoff WP.  This will give you the bug killing power of Cypermethrin without leaving an unsightly visible residue.
There are times when these liquid concentrates should be used outdoors as well.
When spraying in high volume on cedar homes, log homes, etc. for Asian Beetles, Asian Cockroaches or Carpenter Bees, a liquid concentrate is easier to spray through a power sprayer or hose end sprayerWettable powders tend to clog certain types of sprayers when used at high volume.  Also, it is easier and cheaper to use a liquid (instead of wettable powder) when broadcasting Cypermethrin  (or other insecticides) on lawns for ants, fireants.

Pest Management Information    Pests    Site Map    Cypermethrin Liquid