Potter’s Studies on Suspend, Kicker, Phantom, Bedlam, Sterifab; new information about bed bug behavior

by nobugsonme on December 20, 2007 · 6 comments

in bed bugs

Richard Kramer reports to PCTOnline about PestWorld 2007.

Below are some interesting notes from Dr. Mike Potter et al., University of Kentucky at PestWorld 2007 (October) in PCTOnline. The headlines are all mine, the indented quotes are all from the PCTOnline report detailing Dr. Potter’s presentations at PestWorld.

Efficacy study of Suspend and Kicker: fine if you spray the bed bugs directly, otherwise, not so good

University of Kentucky researchers studied three resistant strains of bed bugs to determine the effectiveness of Suspend and Kicker. Direct sprays of these combined products provided 90 to 100 percent mortality; residual applications of this combination provided 28 to 65 percent mortality.

Phantom a promising residual

Residual applications of Phantom provided 95 to 100 percent mortality in the two resistant strains in seven to 15 days. There is hope for residual treatments of bed bugs.

It killed 95-100% of bed bugs in two resistant strains? I like those numbers.

Bedlam decent for eggs, good overall

Another study indicated that Bedlam provided 77 percent mortality of bed bug eggs and overall mortality of 92 percent.

Presumably, the eggs must be sprayed directly? If this is so, this news is less exciting.

Sterifab not for eggs

Sterifab produced very low egg mortality.

Bed bugs attracted to treated harborages if feces present:

Bed bugs didn’t avoid treated harborages with feces whereas treated harborages without feces were avoided.

This is very interesting as hopelessnomo noted here.

How far bed bugs attracted by heat alone:

The furthest distance bed bugs oriented to a heat source was 30 cm — there is still a lot to learn about the host-seeking abilities.

Remember, they are attracted to our heat as well as CO2 we emit.

Kramer also notes that DDPV (Vapona) products may be useful for bed bugs and will be available soon:

DDVP (Vapona) is one of the few remaining organophosphate insecticides that remains available to our industry. Resin strips containing various amounts of active ingredient (80/65/16/10.5/5.25 grams) remain available for residential and commercial uses (check labels for specific applications). Most notable change is an aerosol can (less than 0.5 percent) for residential use and a total release aerosol (more than 0.5 percent) for commercial use. These products reportedly will be available in the near future — they may be a new tool for bed bugs.

Doug Summers mentioned on the forums a while back that there are potential concerns about Vapona.  Although some have been experimenting with Vapona strips, we seriously discourage bedbuggers from doing anything with pesticides outside of label instructions.  

Read the rest of Kramer’s report in PCTOnline here.

1 Winston O. Buggy December 20, 2007 at 4:39 pm

I think overall this is good news and helps explain many of the successful bed bug treatments which happen every day. Bayer has been pushing the Suspend Kicker combo and although expensive it’s good to see results. Interesting about Phantom but folks remember 7-15 days. For Bedlam I think this is still great the best overall product. I’ve never been a big Steri – Fab fan since I used it in a room I was staying in and it took the paint right off the wall. Also alcohol fumes can cause problems. To
those in the know that bed bugs will return to aggregate pheromones is not a big surprise. As far as DDVP I would not use this in an occupied area. For bagged items
temporary placement in voids and some other special uses perhaps but certainly not
in living quarters and not around your bed.

2 hopelessnomo December 20, 2007 at 6:04 pm

In one of Dini Miller’s studies Demand killed them the fastest. Suspend took days and days. Is the addition of Kicker killing them faster? Also, Miller found no repellency.

The interesting thing, to me, is not that they return to where they have previously aggregated, but that they avoid treated surfaces where they have not.

If not repellency, behavioral avoidance? Either way it’s bad.

3 Winston O. Buggy December 20, 2007 at 7:52 pm

Yes Demand was impressive in some studies probably because of it’s micro encapsulation. But we have learned these are many strains
and they vary. Kicker kills them quickly by interacting with the exoskeleton
and possibly allowing a higher dose to be absorbed.

4 LastMeal February 2, 2008 at 12:09 am

Just a pie-in-the-sky comment about bedbugs returning to harborages with fecal matter present: could this be used to trap our little friends? The fact that bedbugs return to the same harborage at all means one of a few things:
1. They remember where their home is. Do they even have a memory?
2. They go for the nearest and most suitable place to lay low all day and coincidentally they wind up in the same place.
3. They mark their harborage with feces so they can find it again after feeding.

If it’s #3, then we should be able to trick the bastards into a trap by making it smell like BB poo. This would be extremely useful in detection

5 Winston O. Buggy February 2, 2008 at 1:05 pm

Among the questions being researched. Remember up until 2001 bed bugs were
not a big issue previous work is from the the 50 – 60s. Different construction,
different population dynamics, different pesticides and use patterns.

6 lieutenantdan April 17, 2008 at 3:18 pm

“Another study indicated that Bedlam provided 77 percent mortality of bed bug eggs and overall mortality of 92 percent.”
“Presumably, the eggs must be sprayed directly? If this is so, this news is less exciting.”

I still have to get excited about Bedlam killing 77 % of eggs directly sprayed. If you can kill that many directly sprayed eggs than the ones that were missed the residual should take care of 92% of the nymphs that hatch and that cross the chemical. I believe that this product is of great value in the War.

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