...a good question that I've really never consciously thought about.
Depends on the situation.
If we want to play extensively without having to worry, several large enemas, at least four or five are the order of the day.
By "large" I mean amounts between 1.5 and 2.5 liters. Overall, it can be described as a colon wash. So you are on the safe clean side with anal games such as pegging, which we often enjoy extensively. These cleansing enemas take time.
We start with a 1.5 liter tea enema, which is quickly introduced with a normal nozzle. This provokes a rapid initial emptying.
Immediately afterwards, the second 2 liter tea enema takes place, which is held for about 10 minutes. Between the emptying of the second and the beginning of the third we use to cuddle and relax. I often use the time for cunniligus, which my wife loves very much.
The next two are high 2 to 2.5 liter slow feed enemas. In between we treat ourselves to some rest, which is dedicated to further foreplay.
I think it takes about 3.5 to 4 hours in total for our actual little mess to start...😛😇🥰😜
Due to the amount of time involved, these games usually take place at the weekend or during vacation...
By the way, we always add table salt to the enema liquid. In between, I usually drink fruit juices. So far there have never been any physical problems.
Play carefully and take care of yourselves