I have a millipede cage how do i keep ants out of the cage from getting the food?

Question

if they are already getting in the terrarium

Answer 1

use bug killer but away from the millipede so it doesn't kill it.  just the ants.

Answer 2

Can you put in a pan of water to make a a moat like barrier? Or put out some bait for the ants.

Answer 3

boric acid come in a gel as well as other forms.  Put some of the gel outside the reach of the millipede, even outside the cage if necessary. The ants will collect it and take it to their nest.  It may take awhile depending on the size of the colony but it will eventually kill all the ants.