no it's not to early. you definetly want to pay attention to these scrapes when thet rut kicks in. i have found them as early as late august.
although, i don't know really why they scrape this early, i guess it's just some form of communication, who knows? one thing i do know is from past experiences and what i have been told, these scrapes are very important when the rut kicks in. i have been told to make mock scrapes in late summer, and not wait until the bucks start scraping, to make my mock scrapes. something about, that these are scrapes that the bucks in the area are already familiar with when rutting activity picks up and if you wait 'til they start scraping, to make your mock scrapes they will a lot of times overlook your scrape to get to the one there familiar with. make sense? it's hard to explain!
i have a friend who puts out mock scrapes in mid-august and deer use them like crazy, he has also taken 4 great bucks on opening day because of this. i myself have put out some scrapes in the past, pretty early, and the bucks have used some of them like crazy all year and some don't get used much at all. but the ones that didn't get used much were definetly brought back to life during the rut, while the ones i made on the way to my stand in the mornings, covered up with leaves! probably because they were unfamiliar!
so keep these scrapes stored in the back of your noggin'! try them out during the rut even if between now and then they get covered with leaves and are left alone, i'll bet you that atleast a couple of them become hotspots! good luck
Pete