Thanks so much for all the info. I've read A LOT of the threads on here about worming, but haven't made up my own mind yet about it. There's so much contradiction and so many different opinions. I hate to keep putting it off like I have been. I am leaning toward a fecal test, but like you say, there's always that possibility of the false neg, which would be a waste of money. I don't SEE anything, but then, like you say, too, by the time you actually see the worms in the poo, they're pretty badly infested. I imagine they would be harder to get rid of at that point. Just wrote to our extension agent in this state for more info (can't find it on their website), so perhaps that'll help me do something/make a decision.
Can you worm and treat for mites/lice at the same time? I gave all of them a wood ash bath and although I didn't see anything, decided to go that way. I'm not adverse to using Sevin, but hate to toss all the eggs. If I could worm and do the Sevin at the same time, that would perhaps cut down on the amount of eggs discarded.
Appreciate your input.