Tag Archives: ATSB

Spartan Mosquito Eradicator vs Pro Tech

Spartan Mosquito Eradicator vs Spartan Mosquito Pro Tech

Here’s a table comparing the two attractive toxic sugar baits (ATSBs) sold by Spartan Mosquito.

ERADICATORPRO TECH
Active ingredientsodium chlorideboric acid
Inactive ingredients water, sucrose, yeastwater, sucrose, yeast
Hole size in cap11/64″11/64″
No. of tubes needed per acre24
Cost per tube ~$10~$12
Guarantee?none30-day
Refills sold?nono
EPA-registered?noyes
Efficacy claim“kills up to 95% of mosquitoes”“kills mosquitoes”
Efficacy duration90 days30 days
Have claims been tested?yes (doesn’t work)no
Locations prohibiting salesCA, CT, IN, KS, MD, ME, MT, NM, PA, SD, UT, WA, DC, PRCA, (MD?)

If you see anything that needs updating, please let me know.

Notes

  1. Spartan Mosquito no longer makes the Eradicator but it is still available at some retailers.
  2. The company has said for years that it is working on selling refills but I don’t think it is. You can buy refills on Amazon.
  3. The 30-day guarantee clock for the Pro Tech starts the day you purchased the device (or the day it was delivered). So if you buy in bulk for future use, that’s something to keep in mind.
  4. Scientists have evaluated the Spartan Mosquito Eradicator and found no evidence it controls mosquitoes.
  5. Another team of scientists have determined that salt (the active ingredient in Eradicators) doesn’t kill adult mosquitoes.
  6. The American Mosquito Control Association does not endorse the Spartan Mosquito Eradicator.
  7. The Spartan Mosquito Eradicator is the focus of a $5 million class-action lawsuit.
  8. Here is my review of the Spartan Mosquito Eradicator.
  9. Here is my review of the Spartan Mosquito Pro Tech.
Spartan Mosquito Pro Tech in a tree

Does the Spartan Mosquito Pro Tech attract mosquitoes?

This post evaluates the claim on the label, “mosquitoes will gather near them”. Per the company, it is the first step in how the device kills mosquitoes. I.e., the device needs to attract mosquitoes if it is going to work.

mosquitoes will gather

Evaluating the claim

I used a security camera to record activity around the cap area. Here’s a photograph of how I arranged everything:

Spartan Mosquito Pro Tech with security camera

Below is a 15-second time-lapse to show that small insects such as ants were easily visible, even at night. I think they are Prenolepis imparis, which are 3-4 mm long —mosquitoes are larger and thus would be detectable even in flight.

On the day that began filming (September 2nd, 2020) I counted over a dozen mosquitoes (all Aedes albopictus) landing on my arms and legs within 30 seconds. According to the instruction sheet, the device begins to work instantly, as soon as water is added, so an hour of remote, video observation should be a sufficient amount of time to evaluate the attraction claim.

Spartan Mosquito Pro Tech begins working instantly

I collected continuous footage for over a week, ending observations on September 10th. The mosquitoes were still plentiful on that day.

Results

During 183 hours of footage, I couldn’t find a single mosquito on or near the device. Here are the contents. I also posted a photograph to iNaturalist.

Conclusion

Because the Spartan Mosquito Pro Tech did not attract any mosquitoes, it therefore did not kill any mosquitoes. If my results are generalizable to other yards, the device is worthless as mechanism of mosquito control.

It is noteworthy, I think, that Spartan Mosquito has not made public a single video of mosquitoes gathering around a Pro Tech (or an Eradicator) when it is deployed outside. My guess is that the company has tried many times to get such footage but has not succeeded in attracting a mosquito. It will be interesting to know whether they will be compelled to disclose their efforts in a court of law. I.e., because the company has formally claimed to the EPA that “mosquitoes will gather” around the Pro Tech, the company would be in substantial legal jeopardy if that statement turned out to be false. If that’s what is going on then it seems likely that the EPA Enforcement Office might coordinate with the FTC as well.

Footage

In case anyone might be skeptical of my results, I decided to upload all 183 hours of footage onto YouTube. I had to break it into 16 segments due to size limits on YouTube.

Scientists find that Spartan Mosquito Eradicators don’t work

Research conducted in Florida found no evidence that Spartan Mosquito Eradicatiors are effective mosquito-control devices. Here’s the citation:

Aryaprema, V.S., E. Zeszutko, C. Cunningham, E.I.M. Khater, and R.-D. Xue. 2020. Efficacy of commercial toxic sugar bait station (ATSB) against Aedes albopictus. J. Florida Mosquito Control Association 67: 80-83. PDF

Laboratory experiment

Below is a rough reconstruction of the laboratory experiment they conducted. In each of the cages (BugDorm-2120), 100 male and 100 female tiger mosquitoes (Aedes albopictus) were released, then monitored for mortality at 24, 48, and 72 hours.

Schematic of laboratory experiment based on description in Aryaprema et al. 2020.

Here is a photograph of one of the choice cages:

Below are the cumulative mortality data for the three cages. The Spartan Mosquito Eradicator filled with the provided packet ingredients (treatment) did not result in higher mortality. I.e., there was no evidence the device killed mosquitoes under laboratory conditions.

Field experiment

The researchers also conducted a field experiment using two sites that had large populations of tiger mosquitoes (because of the presence of tires). At each site they deployed five tubes (separated by 4 m), switching whether the tubes were “treatment” or “control” tubes every 2 weeks. A BG-Sentinel trap (without carbon dioxide) was used to quantify mosquito numbers every week.

Schematic of field experiment based on description in Aryaprema et al. 2020.

Below are the weekly numbers of mosquitoes caught in the BG Sentinel traps. Results: there was no evidence that presence of treatment tubes (filled as per company guidelines) reduced the numbers of mosquitoes at the sites.

Conclusions

The scientists concluded that “Both laboratory and field components of our study show that the Spartan Mosquito Eradicator is not effective in reducing abundance of Ae. albopictus.” They speculate that the contents do not attract mosquitoes and that the holes on the device (~3 mm) are too small for mosquitoes to easily reach the fluid inside. They also highlight the need for an experiment to evaluate whether the active ingredient (1% sodium chloride) kills adult mosquitoes. I.e., even if mosquitoes were attracted to Spartan Mosquito Eradicators and could easily get inside, the salt might not be lethal.

Update: the salt experiment has been conducted. And the result is that salt does not kill mosquitoes.