I would definitely try the paragone-- as well as the Barefoot Herbalist's dewormer (see link under the sponsers section bottom of page.
Reinfection with pinworm is very easy-- I read where you have to clean your sheets and underwear in very hot water in the washer. I would throw in tea tree oil and Borax in the laundery water too.
Also- keep your fingernails short. When vaccuming, make sure to wear a dust mask over your nose and get a vaccum with a Hepa filter to suck up any pinworm eggs (that will end up in housedust)
Dont even as much as pick food out of your mouth with your fingers-- use a clean toothpick.
Raw Garlic in your food will kill pinworms effectively. Also, I read that raw lemon seeds also kill pinworms in children.
Cut out dairy ,starches and sugars-- and most meats at this time and eat raw fruits, veggies , nuts.
Keep your bowels/colon clean. Pin worms lay eggs in the colon , anal area.
Keep the toilet bowl clean after you use it.
Everyone in your household should go on Paragone or other dewormer also- because person to person reinfection is common.
Hang in there-- you may also want to post this question over at the Barefoot Herbalist forum.- MH , the forum owner- has had success treating people with pinworms. It's a very common parasite--- and its picked up right in Northern climates., you dont have to live in a tropical country to get it.