Forget about cleanliness being next to (insert chosen deity) because when we're talking about anal sex and general butt-focused merriment, cleanliness is next to confidence. And sexiness!
Clean Stream's PVC Enema Bulb Kit is easy to use anywhere; just fill the bulb with water/cleansing fluid, hook up the long tubing (this part is optional!), pick your tip, and squeeze. The best part? Everything packs up nice and neat for easy portability. 
Slim tips - 3.7"/9.4cm, .2"/.5cm wide
Beaded tip - 4.7"/11.9cm long, .25"/.64cm wide
Tubing - 23.5"/60cm