If I were breast feeding my child I would use pomegranate, which is a fruit, it comes in pill form, the cheapest site to order from is www.puritan.com , buy two bottles get one free and so on. It would be safe to use while breast feeding. Your local health food store should have the juice if you want to use that instead.
As far as the children, hanna kroeger has pellets that dissolve under the tongue, www.hannasherbshop.com , or the pomegrante juice, or buy raw pumpkin seed(health food store) and grind it up in a coffee grinder to a powder and add some to applesauce.
The rear end itching problem, boy have I been there, it is a terrible problem, I don't have the problem as bad now, it was always been worse at full moon time when I was taking the herbs. I am sure that mine was ascaris, I do a quick enema with tea tree oil when I got the bad itching and would get out 2 to 6 Ascaris the next morning. But I wouldn't do the enema while breast feeding, maybe you could try an enema with the pomegranate juice(I buy the throw away enema bottles and dump out the liquid, fill with water and one cap full tea tree oil, sit over the toilet and squeeze the bottle as hard and fast as I can, hold it as long as I can) or try the garlic slice. My sister has the problem right now and it is Ascaris with her also, she is doing the tea tree enemas.
Just try something to help the itching, you need to kill what ever worm is causing it. Try different things until you find one that helps you best.....heyjude