Skin Hygiene, on the part of you that contacts your Bike shorts, that contact the saddle , may be a problem ..
I wash 'down there' with an antibacterial surgeon's scrub soap, a liquid concentrate.
I brought some on my 9 month Bike tour , with 3 pair of bike shorts to always put a clean pair and had no problems
(only 1 tiny spot, but a topical anti bacterial ointment stopped that. )
Hot and Humid TX you may like a mid day alcohol wipe to suppress bacterial Blooms..