It is basically a thread; hence it is similar to a Seaton. However its mode of action is very different. The Ksharasutra is much more than Seaton. The different drugs coated on the Seaton perform different action like curating the track gradually, keeping the track clean (avoiding infections), helping the healing process. The thread itself keeps the track open and hence facilitates proper drainage. It also acts as a vehicle the herbal drugs used to treat the disease.