I have a realy nice bottle rinser but I could not use them for PET bottles..
I had an old cd/dvd and I cut out the inner ring and it fits perfectly and now I can use it for pet bottles too :)
(http://i741.photobucket.com/albums/xx52/duvellover/brewing/2013-05-04085445.jpg)
time to give those PETs a good enema!
oh it realy makes a difference cleaning bottles.. have about 70 liter of cider to bottle and the 1 liter petbottles are great.. Easy to fill and in summertime its nice to share a bottle with some friends...