How would you know if your snakes has mites?

[Stewart_Reptiles]

Handle the snake, you'll see them on your hands.

Not always if the infestation is not severe enough you will not.

To the op

Check the water dish fir poppy seed looking bugs in the water.

Replace your substrate to paper towel they will show if there are any.

Check your snake and pay attention to the eye sockets they are often more visible there.

A good thing to do when getting a new snake is to pre-treat the enclosure while the animal is in quarantine.