How is it generally recommended you bid on product SKU product groups?

It is generally recommended to increase your bids on product SKU product groups because these are the most granular and specific product groups, representing individual products. Bidding higher on SKUs allows you to be more competitive for searches that directly match your products, leading to higher visibility and conversion rates for items you want to sell. Reducing bids would decrease visibility, while leaving them the same might not capitalize on the high relevance. Never bidding on them would mean missing out on highly qualified traffic.