It has been observed that several disinfectants commonly used in hospitals may fail to
kill the bacteria, and may actually promote spore formation. However, disinfectants containing bleach are effective in killing the organisms[4].
Pseudomembranous colitis caused by C. difficile is treated with specific antibiotics, for example, vancomycin, metronidazole, bacitracin or fusidic acid.
I hope he gave you one of the above antibiotics specific for C. difficile!