We have 7 dogs, some with skin issues and some with lumps and bumps. At first we gave all 7 both products, but economically that's just not doable for us. So now we give those 3 with skin issues the salmon oil, and the 2 with lumps and bumps the mushroom powder (and everyone gets a squirt just for good measure now and then). As you can hear they love it, and we saw an improvement in the itching and foot chomping almost immediately!!