Best food

Hi thankyou for letting me join.
I have a 9 month old lab with a toilet issue. I’d like to know the best food please
We’ve tried Harrington’s and wainwright’s and now we’re thinking about Grain Free Eukanuba puppy.
What are your thoughts pls

Hello and welcome to the forum. For a dog with no specific health issues, It is hard for members to recommend a particular food as all dogs are different and finding one that suits is mostly trial and error. You can look at this thread for advice on how to use the quick search tool and find some different foods. If you find one that you like the look of, feel free to ask about it as some members may have had experience feeding it.
You don’t say what the toilet issue is.

Hello and welcome to the forum. Another useful link here. The filters I always use on the Dog Food Directory are no red ingredients and clearly labelled. Setting the rating filter to 4-5 stars gives the better quality products. With a dry food diet you can add variety by using suitable human food. Check out Rodney Habib (Planet Paws) on Facebook and YouTube.