Coroplast Alternatives Would large foam cubes work?

I'm looking into making Kiada a bigger cage and I would like to use these kinds of cubes as the floor. Right now I'm using fleece but she is fully litter trained so i have no worries of accidents. My only concern is that her nails (even though they are trimmed) may get caught in the cube's if she digs in to deep when she starts running around. Just wanted to know if anyone had used these before and if they work well. Thanks

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