A good enema bag/bottle is the best choice economically

pj, your enema bottle shouldn't leak. If it does it's defective. Most major pharmacy chains sell enema equipment on their web sites. If I remember correctly, the one in this image below from Walgreens is $11.99.

//www.curezone.org/ig/viewphoto.asp?i=Typical_Pharmacy_Combination...

To order it, just go to walgreens.com and search for enema.