Using his venomous insects, Torune gathers multiple infected corpses and contains them within a barrier where the decaying flesh will release a gas that in time will ignite an explosion and release the venomous insects in a huge swarm that could cover the surrounding landscape. According to Shino, the barrier accelerates the insect's multiplication.
When written as 蠱毒, "kodoku" means "to poison someone". When written as 孤独, it means "isolation, loneliness, solitude".
As stated by Torune, the Jar of Poison Technique was labelled a kinjutsu due to the sheer volume of corpses required to execute it and the indiscriminate effects of the poisonous cloud.
The appearance of the barrier closely resembles that of the Four Corner Sealing Barrier.