mycobacterium
Why?
because mycobacterium have a waxy wall which makes them more difficult to kill. An example is mycobacterium tuberculosis.
Why is each of the following bacteria often resistant to disinfectants? Mycobacterium, Pseudomonas, Bacillus?
I do hope my answer is what you're looking for.
Most bacteria are in abundance on any surface area which meets the minimum requirements for them to survive (moist, dark, warm)
When a person sprays too much disinfectant, although most of the bacteria dies, whichever cells are left react violently in order to "live" by developing mutations in their genetic code to become resistent to the disinfectant, and such is with later generations.
I am not familiar with those bacterium in particular, but that IS how most of them cope with antibiotics or disinfectants.
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