Let's talk about what items we can not ship by small parcel shipping service in USA, Prohibited and Restricted Goods when shipping in USA:
Tobacco and Vaping Products: Shipments containing tobacco products (“Tobacco Product Shipments”) are accepted for transportation only from shippers who are licensed and authorized to ship tobacco products pursuant to applicable laws.
Alcoholic Beverages: Packages containing alcoholic beverages (beer, wine or spirits) are accepted for transportation only on a contractual basis. Shippers must be licensed and authorized under applicable law to ship alcoholic beverages.
Firearms, Ammunition and Weapons
Hazardous Materials and Dangerous Goods: Limited Quantities (Ltd Qty) shipments are accepted for transportation without Hazardous Materials shipping papers and without a contract, only within the 48 contiguous states via UPS Ground shipping. UPS Ground shipments are not available for Ltd Qty shipments to and from Avalon, CA; Catalina Island, CA; Beaver Island, MI; Mackinac Island, MI (winter only); the Bass Islands, OH; Kelleys Island, OH; and San Juan Islands, WA. Ltd Qty packages shipped via UPS Domestic Air Services and UPS 3 Day Select shipping within the U.S. and Puerto Rico, and Consumer Commodity and Ltd Qty shipments to IDG destinations, are accepted for transportation on a contractual basis only.
Packages having a value of more than $50,000.00, except for a package eligible for the Enhanced Maximum Declared Value of $70,000.00 per package
Maximum Size The maximum size per domestic package is 165 inches in length plus girth [(2 x width) + (2 x height)] combined.
Maximum Weight For domestic package shipments, the maximum actual weight per package is 150 pounds.
Reference from UPS.com
