Ah, also you need to have at least two ladles for this purpose: one with soapy water, and one with clean water (hell, you don't want to walk away while being covered with soapy water, right?!). While wipes for intimate hygiene have optimal PH level and don't cause irritation, so it's not necessary to wash anything once more after them. 
Not saying that ladles can't be taken everywhere.
Well, things would definitely be easier if normal, real bidet would be as common in Russia, as in Italy or some other countries...