The cleaning of the vaginal area is done to help ensure that no remnants of old blood remain before performing the
hefsek taharah. Therefore, the cleaning can be done at any point during the day you plan on performing the
hefsek. Alternatively, you can bring a baby wipe with you to clean the area immediately before performing the
hefsek.
You may also want to do a trial
hefsek earlier in the day, before you start driving. This can serve as a backup if you find that no restroom is available close to sunset (e.g., you get caught in traffic).
Please feel free to get back to us with any further questions.