The only sure way to not get cancer is to die. I beleive I heard that fried hamburger causes the big "C".
I have read the epa specs on this, and in the end it did not strike as being that toxic. The docs I read failed to prove an increase in human cancer (EPA list as posible and so to does the world health organization) , and aLways seems to deal with heavy concentraions, ie. for workers that manafacture the material.
Sometimes its is easier for a company to settle/agree to remarket, rather than to prove the negative that the cancer came from soomewhere else.
IIRC, while once widely used, say in pet flea collers and arial sprays, the epa restricted usage to the plastic pucks, and still allows use in food storage areas. If this was so dangerous, I think both eating and smoking would be bad. Also, diclorovos breaks down in air; does not need water.
Like a loaded gun there is danger. I feel that users should be aware, and make their own choices, bit unless you grow your own veggies and grains you are ingesting the residue anyway.
"The Occupational Safety and Health Administration (OSHA) has set a permissible exposure limit of 1 milligram dichlorvos per cubic meter of air (1mg/m3) for an 8-hour workday, 40 hour workweek."
"No evidence of carcinogenicity was found when rats were exposed to air containing up to 5 mg/m3 for 23 hours/day for 2 years (3). A few tumors were found in the esophagus of mice given dichlorvos orally, even though tumors of this kind are normally rare (9)."
"Feeding studies indicate that a dosage of dichlorvos very much larger than doses which inhibit cholinesterase are needed to produce illness. Rats tolerated dietary doses as high as 62.5 mg/kg/day for 90 days with no visible signs of illness, while a dietary level of 0.25 mg/kg/day for only 4 days produced a reduction in cholinesterase levels (3)."
"Dichlorvos is rapidly broken down in the air and in damp media such as soil. The pH of the media determines the rate of breakdown. Alkaline soils, water, etc., show rapid breakdown, whereas acidic media shows slow degradation. For instance, at a pH of 9.1 the half-life of dichlorvos is about 4.5 hours. At a pH of 1 (very acidic), the half- life is 50 hours (8). Dichlorvos is non-persistent."
In my mind, using a few of these for a week or two during lights out, to contol an infestation, and the produce cure for a few days should reduce tocicity to the degree that you likely have more likely carcinigens, such as vinyle off gassing, to worry about.
Just my .02 cents.