Are my rats able to eat through half inch mesh?

[Bellabob]

I have 1/4 inch mesh and they get the food fine.
I was paranoid at first too, that they weren't able to get to the lab block so I would place a few blocks in the tubs just in case lol

Yes, that's what I've been doing. But this food is pretty expensive, and I would rather not put it directly in their tub. I've used dishes before, but they always fill it with shavings.