I am no chemist and I don't know the difference between ethanol and methanol, but I posted a thread on here a year or more ago about the use of methanol. I can't find it now. Anyways, attached is an article from the COC in 2009 on that which sounds similar to the use of vodka. I tried the methanol for a while on a Beallara Peggy Ruth Carpenter plant that I had divided into 3 parts. It wasn't much of an experiment because I managed to kill 2 of the 3 plants
But I suspect it was for other reasons and I can't remember which one survived! Anyways after taking two years to recover, it is about to bloom. I am now tempted to try the vodka!