I'm glad you asked that as I am about to start my first parasite cleanse as soon as the Clarkia arrives. Reminds me of the time my dog came inside with this thing swinging from his butt. I chased him back outside and tried to see what it was. He was going crazy running in circles trying to get at it. I ran in, put on some rubber gloves and went back out to assist. I grabbed this white string and pulled about 8 inches out. Still stuck in the butt. I pulled again and again and realized it was about 2 feet of mop string! I get all the fun jobs.