I have learned not to put in mock scapes anymore. I have found, for me, a better way, but it requires some thinking ahead.
I hang licking branches (vines actually) where I want a scrape and, usually, but not always, the deer come and make the scrape for me. I do this in early August. I have tried it with and without orbital gland lure on the branch -- it seems to work either way so I have stopped buying the lure and just put them out as is.
I find critical points are to get these out early and place them in what I would call "marquee" locations. Another point: It doesn't always work in the timeframe you want, so you need to put out more than you might think. For example, last year I put out 10 of them. By the start of bow season (Oct 1 in my area) I had 5 active branches with scraping started. Now, nearly a year later, 8 of those 10 are active. For some reason those two remaining locations just aren't of interest to them.
Once you have them going they work great and several of the ones I have are being used year round. In fact, I don't really refer to them as scrapes anymore because I realize the deer are really mostly focusing on the licking branch aspect of it. Both does and bucks use these outside the pre-rut, with bucks tending to use them more in the pre-rut. If you haven't tried this I urge you to do so. Again, you don't need to spend money on any lure to do this.