1) What are you trying to kill with this thing? If the answer is
"mosquitoes", consider installing a bat house, like a bird house, but for
bats. I have a friend who did this because of mosquito problems around his
pond. It took 2 months for bats to find the structure, but once they did,
the difference in livability around the pond was amazing.

2) Here's a good link to read:
http://pmep.cce.cornell.edu/profiles.../resmethrin-ex
t.html
"residues were low in hens sacrificed 12 hours after the treatment, with the
highest levels found in the liver and kidneys". If this were the only
chemical you were exposed to on a daily basis, it might not matter much.
But, it's not the only chemical you're exposed to. As your liver.

3) According to chemical manufacturers, studies on animals are not valid
indications of a chemical's effect on humans . Since there never will be a
valid (large) study done on humans (unless the entire population of a prison
volunteers for such punishment), nobody will ever know the true effect of
pesicides on people.

4) Conclusion: You are the guinea pig for the chemicals you buy.