I have threadworms, having successfully avoided them for 38 years despite years of dubious hygiene practices (as a child).
DD (2) has somehow skilfully avoided them (though she probably brought the bastard eggs into the house). Or at least as far as I can tell she isn't infested (no sign, no moaning of itchy bum, no worms in her nappy).
DH (also 38) has buggered off on a work trip, so at least that's one less person to hoover under and wash towels for.
I found the offending worm (singular) whilst hovering elegantly over granmama's compact mirror shining an Assistive Light up my bum, at 2am Thursday morning.
DD, DH and I took the Ovex Thursday afternoon - and I'm still getting late-night tickles.
What do I do if Ovex doesn't work? How long should I give it? I reckon it's been 4 and a bit days.