It could be mites or worst, some rott, idk, really I have a microscope (cheap one from amazon), that I bought around a year ago, and it's my first one, I don't use it much, so I'm fairly clumsy using it (is not that easy xD), I'm a farmer, I can't count how many generations of my family before me was farmers too, I grow and care thousands trees, veggies, cereals, fruits... maybe this is why I'm not so "picky", and the reason behind feel much more comfortable seeing it with my own eyes and touching, smelling it, than using microscopes, or just I'm weird one, could be too lol
peace