Like so many here, my early enemas were OTK, from a bulb. I was switched to a bag aound 8 years. By then, Mom was pumping 8, 8 oz adult bulbs into me. So, the bag was much easier, although she continued OTK until I was about 12. I was still sneaking bulb enemas in the bathtub and did so until I left home. When I spent summers with my aunt, she also used the bulb OTK, and continued until I was 12, then she switched to a bag. Although Mom would mix my enemas and fill the bag, she sometimes left me in the bathroom after hanging it on the towel rack and inserting the nozzle. My aunt continued to hold my bag and give me enemas until I was 22 and graduated college. Once she realized that I knew she enjoyed giving them to me, and that I was enjoying getting them, She would ask me at least twice a week if I felt plugged up. I always did, LOL!
I had a girl friend years later who loved enemas, and she asked me to use her douche bulb. That was a revelation, and I asked her to return the favor. I immediately invested in one, which I still have. Like DAW, I find that bulb enemas are more fun, but difficult when solo. I wish I still had a provider.