Pale comb, runny poo then they die.
I have them Apple Cider Vinegar a few days ago but was out of town so just today gave them Wazine in their water
Sorry for your loss.
Can you take a fecal sample to the vet to have tested?
They should be able to help determine whether it is worms or possible a bacterial infection.
Any other symptoms besides pale comb - not eating, not laying, lethargic, etc?
If you have another one pass in the mean time, I do recommend that you send one for necropsy to help identify what is the cause, so hopefully it can be treated.
Where and how to send for necropsy: