I've read alot of topics on here about feeding raw and it really isnt an option for me because of money etc,

Our dogs get fed once a day with Bonios for breakfast and normally a treat during the day like Dentastix's from Pedigree, At night they get fed a can or half a can of either Winalot or Pedigree dog food along with some Mixer either by Winalot or Pedigree and I mentioned this to someone today and they told me that Pedigree is really unsuitable and causes skin problems? I've never seen my dogs with any type of skin problem but its worried me and I want some opinions if you have heard anything bad? I dont understand ingredients for dog food (I know I sound stupid!) so anyone have any input?