Best Rat litter?

Hi! I'm currently in the process of making a list on rat essentials since I plan to get 2 rats, I can't find a solid answer on a good litter brand and all the ones I've looked at either have baking soda or people have written reviewa about there being pieces of plastic or metal in the bags—If anyone knows a good brand, please let me know!! I'll also take any other advice on hammocks/ropes/enrichment/feeding tips & water :)) thank you all in advance