Good instructional for performing Jala neti and sutra neti. Most non-yogis will suffice with simple jala neti as it was all I did to cure 14 years of sinus problems.
The last trip to the ashram was during a fasting/cleansing retreat and I observed all manner of people performing the various netis onm the lawn daily.
Please do not attempt sutra neti or kapalabati unless properly instructed by a teacher.