Adroll is a great remarketing channel along with Criteo and working directly with Facebook Dynamic Product Ads.
Adroll accepts many different feed formats, like Google Shopping, Amazon, and even Connexity, in CSV, TSV, or even XML format
Feedonomics can easily create an Adroll feed with best in-class optimization.
Especially when you need to do deduplication, to ensure you only have 1 product per per item_group_id.