Looking for dog shampoo recommendations

Our two labs are very busy and love being outside. Obviously they can’t be bathed constantly because it’s not good for their skin/coat, and they have sensitive skin anyway so I always try to extend the time between baths as far as possible. The shampoo I currently use just doesn’t seem to do much, even right after they’ve had a bath. I washed them about a month ago in the evening and by the next morning, they smelled like they were still filthy (and they hadn’t even hardly been outside).

Anyone know of a good quality shampoo that will help eliminate that “outside smell” a little better, but is also gentle and won’t irritate their skin?