Originally Posted by BikeWise1

Use Prolink correctly and you wont need any such device, nor will your chain need to be "degreased".

Dribble some over the cassette as the chain passes through while pedaling backwards. Pump up you tires (you were going to do that anyway, right?) then grab a rag and while squeezing the bottom section of chain, pedal backwards again. You get a clean, relatively dry chain, and you didn't make a mess, nor spend your money on frivolous contraptions.