Here in NC locating the clear Dryer tubes in stores is impossable because they have been taken off the market. But one resource is the Family Housing facility maintence branch on my local military base. Base Housing like most military units don't like to spend their alotted funds unless they have to. In some places they still use the plastic dryer hoses until they are required to replace them. They are now required to replace with the metal hoses but will sometimes have a stock of the plastic which they haven't tossed out. I have found that if you ask nice they will help you out if they can. Another cheap tube you can get 20' pieces of black tubing from Lowes or Home Depot. They only cost $4.00 each, you can cut them and add connector pieces and make a tube maze and the pieces can be placed at an angle and looped. Because the tubing is ridgged it won't colapse on itself and trapp fuzzies. It also has small hoes in it so getting air is never a problem. Also because the materal is hard claws can't tear it and there is no metal wires that can hurt. The only down side is that you cant see the fuzzbutts having a good time. Also if you have limited room these can take up space. If you have free roaming these tubes are great for placing in your living room behind your sofa or along the base boards. The pipes do make a loud noise when a fuzzbutt runs through. [Posted in FML issue 4966]