Toilet checks, and maintenance cleans are a pretty routine part of the FA job on reputable airlines - top-up supplies, a quick wipe down of surfaces/mirrors/seat with sani-spray are usually all that is required, using plastic gloves and specialist cleaning supplies. Afterwards, we have steri-handwash to use. The more dedicated (like me) might run to mopping up the usual urine puddle on the floor or wiping the bowl upper rim under the seat. I draw the line at faeces, as does everybody else that I know - that's when you lock off the toilet and move on to other duties!