TABLE IV
Hierarchy of Microbial Resistance to Disinfectants
| Resistance to Disinfectantsa | |||
|---|---|---|---|
| More Resistant | Microorganism | Examples | More Resistant |
 | Bacterial Spores | Bacillus cereus/Bacillus sphaericus |  |
| Bacillus subtilis | |||
| Clostridium spp. | |||
| Mold Spores | Aspergillus, Penicillium | ||
| Gram-negative bacteria | Pseudomonas, Providencia, Escherichia | ||
| Vegetative Mold and Yeast | Aspergillus, Trichophyton, Candida | ||
| Less Resistant | Gram-positive bacteria | Staphylococcus, Streptococcus, Enterococcus | Less Resistant |
↵a Adapted from Reference 19.