Haven't heard of macho but the pesticide (Montana)is letter for letter the same active ingredient as admire 21.4% just marketed under a different name.
Curly,l was able to talk a man into selling me some by the ounce and he charged me $2.00 per ounce but he don't use it for fleas.Its gonna be the bog farmers that use as pesticide.l use full strength just as you would admire if you can find it but don't let a friend get it for you if he's got dogs also.lol