No, they re still going strong. I believe we have some Bio engineered made for combat strain, because for MONTHS, washed, bleached, cloved, anti microbial ed, and boiled everything I could. After the first round of mebendazole, which didn't work, my four year old and i had a one time wear underwear rule. After a month, we started washing them again. I'm on the verge of tears ALL the time. And currently looking for a dr that will help us. Only thing thatkeeps me from the looney bin is sulphur 8. It keeps that feeling at bay for a few hours...but sleep is a thing of the past. I sleep an hour or two, then have to get up to try stop the crawling. My daughter has a nightmare about a snake almost every night. Related? Don't know, but she hates sleep as much as I do, now.