do it all the time - for better scrape pictures on my cam. On some sites i never use deer scent - only my own urine.
I get lots and lots of deer coming to the scrapes - with no concern in their mannerisms. For me its cheap scent for my cams - and works good.
Here's one from last week - I think I had 50+ pictures in 4 days on my "mock scrape".
Try it yourself - do a double blind test - use two cams - one with - on without on a scrape line - I've done it. You get the same deer in the pictures. You still have to be scent concious - don't handle the vegetation and/or spit, etc.