The duration for salmonella is 4 - 7 days.
You may want to consider using a higher quality of food than Purina too.
I had one who had diarrehea issues when I was feeding wellness...after eliminating all the other possibilities, and feeding a bland diet...I switched foods.
Sometimes dogs do get intestinal issues without any apparent cause. You never find out what made the dog ill.
__________________ Deb, Reese, Reggie, Frazier, Libby, Sidney, & Bodie |