My 3 month old lab/aussie shepherd mix doesn't seem to like the slicker brush. I'm not sure whether it's the metal (as he doesn't seem to be too fond of anything metal or especially shiny) or the feeling as I know it's a lot more coarse than the boar bristle brush. However, he's shedding and it's doing something awful to my allergies so he's overdue for a good brushing. I'm uneasy about taking him to the groomer since he still has two sets of shots to go. With that in mind are there any good and equally effective alternatives to the slicker brush?