It used to be internet purchases in WA were not sales taxed unless the business had a location in the state. You were supposed to track and report all purchases on your own from out of state sellers (few did). That all changed in 2018, we now pay sales tax on basically all internet purchases.
Thats to be expected. Here you pay personal property tax on anything with tires, if it's registered, and on mobile homes.
List includes, trailers, boats, atv's, lawn mowers, trailers, tractors, rv's, campers, mobile homes, auto's and trucks, farm equipment, and heavy equipment.
I dont know a single person that claims a lawn mower, atv, tractors, or farm equipment.
About the only ones that the state can enforce is anything registered and mobile homes since it's attached to your address.
They tried to do a tax on household items, and succeeded for a short time. A class action lawsuit shut that down.