Creating a negative filter

Hello!
I have a table that shows which products are in which refrigerator


I have a drop-down list with which you can select the products that you need to add to the refrigerator.

How can I make the drop-down list not show products that are already in the refrigerator?

Hi @Evsikoff ,

I hope this cloneable app can be a start,

Thank you very much! I solved the problem a little differently.

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