Best rat proof feeder?

[Allegra17]

Our rats keep eating my chickens food and even eating the plastic container that the food goes on with the lid. What’s the best rat proof feed container??

 

[Ingrid_Grace]

Maybe a feeder like this that the chickens have to stand on to open. I don't think a rat would be heavy enough to use the lever/step, but they might be strong enough to lift the lid up

https://www.amazon.com/dp/B0CMTMYF7V?psc=1&ref_=cm_sw_r_cp_ud_ct_Q7NYV0P34AKFKD59DMH3