Once my mother said, "I think you could use a good enema," there was no way to change the outcome. I have vague memories of enemas from a bag before 5 years old, but very definitely a series of enemas at age six after I swallowed a screw. Almost all enemas were from my widowed mother, who was a believer in the healing power of a 'good enema.' I did get more than a few from one of my spinster aunts who was an RN since I usually spent vacations with them.
Enemas from my mother were always in the bathroom; me on my knees, bent over the tub. I always wore a t-shirt, but was naked from the waist down. My mother, sitting on the tub edge, black enema nozzle in hand. Ponds Cold Cream was the lube of choice. The bag was an open top red Goodrich bag with the regular red hose, metal clip, and black nozzle. The first enema was always soapsuds - generally Ivory, but occasionally Lifebuoy. The scent of Ivory and Ponds filled the air. Until age 12 I got about half a bag then my mother's sisters convinced her I was old enough and big enough for a full bag enema. From then on it was always 2 quarts. If you could not take it all, the process was repeated. I always got a tap-water rinse.
When I was 15, I got pinworms and the prescribed cure included a wrenched oral medicine and soapsuds enemas. My mother bought a new red Rexall Victoria fountain syringe when we were at the drug store to pick up the prescription medicine and that was used for all enemas that followed. At that age it was terribly embarrassing to be given enemas by my mother. I inevitably got erections and tried to hide them, but my mother just told me it was just natural. Her enemas were as gentle as she could make them, but were always to completion.
My RN Aunt was more of a no-nonsense giver. She was cold and officious and her enemas were very clinical and uncomfortable. Her bag was a Davol 'Comfy' as I remember and it was always too much! She was a Lifebuoy fan. After age 13 I don't recall any further enemas from her.
The last enemas from my mother was when I was 17. I got a wicked flu and was very dehydrated. She gave me two enemas and those were my last from her.
I was a well watered kid!