1/4" works fine. I have drop in feeders for all my rat boxes and they are all made of 1/4". It works great for the different types of feed I use from the Lab Block to Good Day Cat & Dog food. The food won't slip through and the rats actually have to work for what they eat, less time to figure ways of escaping or chewing their homes as well. Works great for me.
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2.1 RTB (Zander, Ridick, Liliana)
1.1 Burms (Vladamir, Natalia)
0.1 Lavender Albino Retic (Katerina)
1.1 100% Het Tigers (Nicholi & Charlamaine)
2.3 Silver fox rabbits
many, many, many, many rats
"New strategy R-2, Let the Wookie Win!!!"

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