Let us be the operator that finally answers this properly. You have read about the routes and the altitude and the training, and somewhere around midnight you typed the real question into Google: what about the toilets?

Kilimanjaro is five climates stacked on top of each other. You start warm and humid in the rainforest, cross open moorland where the sun burns and the wind bites, walk an alpine desert that swings from hot noon to freezing night, and finish in arctic conditions on summit night, well below freezing with wind on top.