Many people are not aware how complex drain cleaning can be.
as a Master plumber and having completed a 5 year (10,000 hr) and 744
hrs of class room studies I wish my training would have included the
drain cleaning aspect of "plumbing" would have saved me a lot of time
from having to learn by OJT
Between water jetting, rodding ,ram jets , vacuums and video
inspections this profession is really quite interesting if taken
Not to mention very profitable if performed correctly.