I tried this years ago and it did not work for me. It turned out to be a total mess, caused a sneezing fit, and the nylon carpet fibers do not compost well. I put human hair directly into my shade garden to help ward off the deer, and I believe it is working (my neighbor's impatiens are all eaten and mine have not been touched.) Your vacuum waste might work better than mine, particularly if there is no nylon/polyester fibers in it.