ANTSTORE World of Ants

[nikolas86m]

Hello

I have a Messor structor colony, with more than 1000 workers. I had this coloνy, approximately 3 years.
All looks good until today. I left home at friday afternoon, and returning today, i saw all the ants dead, except about 20 workers with some larvae
I'm very sad with this, i can't understand what happened, i can't explain that
Can anyone help with that?

[trailandstreet]

What did you change in the last days? Food, soil, new decoration items?

[nikolas86m]

Nothing, after removing from the test tube, i didn't change nothing!
the only thing i saw, was that the last months, they don't ate and collect seeds, as much as before,
even though they had seeds every day