Here's the breakdown:
* Guano: A mixture of nitrogenous waste, uric acid, and water.
* Frequency: It's impossible to determine how often a tarantula excretes guano because it depends on individual factors like diet, size, and activity level.
* Not urine: It's not analogous to urine in mammals.
So, while they do excrete waste, it's not in the form of pee like we're familiar with.