The present invention relates to a device for conveniently collecting bodily waste from patients. One embodiment of the invention relates to a disposable bag comprising a plastic bag attachable to a toilet, the bag being fabricated from a material suitable for collecting bodily waste, such as urine, feces and vomit, which contains toxic materials from chemotherapy treatment, and a hem defining an opening of the bag with an elastic band located inside the hem configured for securing the bag to the toilet during use.