I'm not really sure what the question is there syuteo.
If your ants are dying (I assume not of old age) you need to check the environmental markers and your own influence on where / how you keep them.
Are they too hot / too cold?
Is there too much / not enough humidity
Is there too much light (causes stress)
Are you checking on them too often? (Stress)
Is there an adequate food supply?
Do they have access to clean water?
Could there be a contaminant in the arena or nest itself (cleaning agent/ pesticides)
I am afraid there are no easy answers on this one