Our boys Milo & Ziggy haven’t batted an eyelid at the pre & pro sprinkle topping. If anything I think they dig in faster to their meal of the day that has it on. (Used sachet 1 of 3 bundle so far) has improved the smell & consistency of their poos (litter tray cats). It weren’t bad beforehand, smell of Ziggys was sometimes v bad & had occasional vomitting and loose poos I was looking to improve. Milo’s were occasionally on the dry hard side - he has the half tsp sprinkle + about a tbsp of water added to bowl. Both improved. Would buy again.