Settings in Whiplash
We have an item-level details setting for "Hazmat" which can be set to No, ORMD, or Lithium, as defined in Easypost's Shipment Options docs.
The old "Contains small batteries" settings points to Lithium; the old "Hazmat = Yes" setting points to ORMD, which has always been true.
Bulk updates & search
In any Inventory search, Bulk Actions → Hazmat allows you to change Inventory in bulk; Hazmat Type a searchable term. Go make some rules!
Generally speaking, Hazmat = ground only. When you're building out your rule set, it's best to proactively select ground shipping methods for Hazmat items.
Things go much better when whitelisting a short list of approved Shipping Methods for dangerous goods. Expedited shipping is usually not an option.
Make sure that you have your ORMD stickers ready and rules set for any of these goods. You will also need a Surface Stamp. You can purchase these from Uline if needed.