Silent water bottle/sipper

[JMartin]

Does anyone know of a type of water bottle or sipper that is silent?

I have a regular water bottle with the metal ball inside the metal tube, and that thing clicks and makes a lot of noise every time the ASF's drink.

Thanks for any help.

[771subliminal]

http://www.arbreptiles.com/cages/rat_rack/ratrack.shtml

one like in this set up has no ball