Having a bidet is the ideal, but without it, wipes (I recommend ultra-sensitive non-scented baby wipes) carried in your purse combined with regular changing of a pad or insert (depending on flow rates) will mostly keep the job done anywhere you need to go. In unusually dire situations, I'll grab a paper towel and wet it in the sink, but that's rare.
Having a bidet is the ideal, but without it, wipes (I recommend ultra-sensitive non-scented baby wipes) carried in your purse combined with regular changing of a pad or insert (depending on flow rates) will mostly keep the job done anywhere you need to go. In unusually dire situations, I'll grab a paper towel and wet it in the sink, but that's rare.