Originally Posted by A_Lee

Lots of places in Asia have the bins next to the toilets for disposing of the tissue. At Suvarnabhumi, the toilets outside the TG lounges that I've seen don't have the bins, so evidently there isn't a problem with the plumbing in the airport. It seems though that there isn't enough water pressure in the toilets in the TG lounges to properly dispose of all material easily, with the tissue being the lightest material, it seems to want to linger. If you use your tissue wisely and only dispose of a couple pieces at a time, most toilets seem to be capable of handling it. Larger quantities may require multiple flushes, or could clog up the toilet or pipes. Sorry, maybe a bit more descriptive than you wanted to hear.