"Remember to empty and wash your DivaCup at least twice a day, a minimum of every 12 hours.
If you are unable to wash The DivaCup after removal (for instance when using a public restroom), wash your hands thoroughly before entering the stall, empty the contents in the toilet and simply use a dry or damp tissue to clean the cup. At the next convenient time, clean as per the above instructions."
As far as how it would work in rural India, dunno, as long as you have regular access to soap and portable water.
http://divacup.com/how-it-works/care-and-cleaning/
"Remember to empty and wash your DivaCup at least twice a day, a minimum of every 12 hours.
If you are unable to wash The DivaCup after removal (for instance when using a public restroom), wash your hands thoroughly before entering the stall, empty the contents in the toilet and simply use a dry or damp tissue to clean the cup. At the next convenient time, clean as per the above instructions."
As far as how it would work in rural India, dunno, as long as you have regular access to soap and portable water.