One of the methods advised on this site is to apply vinyl sheets to a window pane, using baby shampoo and a squeegee. I was wondering if anybody has tried this, what results I can hope to achieve, and what thickness of vinyl works best. Obviously thicker should be better but maybe the thicker sheets don't adhere as well or stay put for a long time?
I'm trying to shut out barking from 3 medium sized dogs. If that doesn't work, I plan to shut them up instead by using 140 db sound blasts at 25 khz.