Thanks to Tracy for this Frugal Baby Tip!
I used to use the flushable liners on a roll (Kooshies or Flushabyes or something) and I found that the worked well, but only survived two washes at the most, sometimes not even that. So, I decided to try Gerber's EZ liners.
They are much wider, work just as well, and survive countless washes as long as they are kept out of the dryer. But, my husband has thrown many in the dryer, and I've been able to reuse many of those, too! I flush the soiled ones, but only ever one at a time, and I make sure there is nothing else in the toilet that needs flushing!
They are much cheaper than the flushable ones (which I think can only be found in catalogs) and cheaper still, when you consider that one box of Gerbers last much, much longer than a roll of the other kind. We're pretty poor, so no contest!
P.S. Someone posted asking where to find Gerber liners. Fred Meyers carries them for a little under $4 a box. For those in the military, the PX/BX used to carry them, but I'm not sure if they still do.