Kasey,
Here are two pubs, both with info one written by a very good buddy of mine.
My thoughts though would be around not tying yourself to saying you are going in to kill the roundworm, but rather
minimize the risk of spreading it to the rest of the house during your process. I would be far more concerned about
the airflow while it is being removed. This itself presents a big challenge.
I think everyone has good intentions up front, I'll start near the access hole, from there I'll clear as I go with the steam
unit, but in reality how will it go down? I think until someone gets through several of these it would be hard to say how
many issues could be caused on the side.
Contracting diseases and parasites always always comes down to exposure and time. If people have had these raccoons
in their attic for years, the risk is very low till they pop their head up and start stomping around breaking things up. That
is where we come in, right? So when we go in that same attic, I want to be sure I limit any chance of causing the folks
in the dwelling an issue.
To be clear I'm not saying don't use a steamer, sounds good, just saying the real rubber meets the road where air flow
and action start coming together.
Here are the two pubs that come up with a quick google search. The first by Joe Caudell second by my old gang of misfits.
http://extension.entm.purdue.edu/publications/ADM-17.pdfhttp://www.aphis.usda.gov/wildlife_damage/nwdp/pdf/WMS-09-23.pdfor a third colorful cartoon from CA folks, none the less has similar info
http://www.cdph.ca.gov/healthinfo/discond/Documents/RaccoonRoundworms.pdfI think it has been mentioned before, but when discussing disease it is worth thinking through how much discussion you have
on the topic with folks. You can't know if they already became infected with something and thus if they don't know yet, then
become clinical after your work is done they can assume and therefore likely sue you for being the one who caused it.
The one most important thing I was taught a long time ago is be very careful when discussing wildlife disease and epidemiology.
The public can run a long way with just a little info. Also you are correct, cold is not a bother for roundworm. Vet clinics and labs
can do fecal tests for roundworm, it isn't a difficult test, you basically take a sample of scat fresh, spin it in a fluid and the eggs rise
to the top and stick to slides you place over it. I would imagine it would work with old scat, fresh is just better as it will spin out easier
than the old nasty stuff. I've done this process with coyote scat, not fun, but hey northern michigan in the winter at -20 or so, sometimes
it was the only thing going.
Good luck!
Justin
Found Stephen's suggested draft protocol with a little digging - here it is -
http://icwdm.org/Publications/pdf/Diseas...atrines2011.pdf"Cleaning Standards" section 8.0 I believe it was refers to using steam.