Everything Visible Dust makes has been awesome. I am still on my first box of Focusing Screen Swabs but I have used them and it does an amazing job. I believe (although not sure) I used the same fluid I use for the sensor. The people at Visible Dust could answer that better and they are very helpful.
I see debris when i look through my viewfinder and its driving me nuts. I have a Nikon d3100 and every place that i look on the net people say dont touch it and just send it in to get it fixed. I would much rather fix it myself if i can. I have watched the short video on Youtube(looks simple) and i just cant see sending my camera in to get it fixed when i can buy these swabs and have the job completed by myself several times. I have heard good things about Visible Dust products though. Thank you for the input!