I tried the baby oil on my older ragdoll and it did work on smaller mats (dime-sized), but the biggest (silver dollar sized and larger) didn't budge. He also became constipated from licking the area, so I have to say nay on really large mats. I ended up taking to a cat groomer at a local vet and she graciously shaved off the large mats. He looks a mess right now, but I know he is comfortable and the hair will grow back. I use a dematting comb daily so he won't end up in the same situation and to remove shedding winter coat fur.