Bobson,
This is from the current 2015 edition of the WDFW hunting regs.
Page 88. This is very vague, and probably intentionally so.
"Waste of Wildlife:
You may NOT allow game
animals or game birds you have
taken to recklessly be wasted."
Also on page 84,
"License Suspensions and Property Forfeiture
Washington State’s Fish and Wildlife
Enforcement Code (Revised Code of
Washington Chapter 77.15) requires the
mandatory suspension of a person’s hunting
privileges if a person is convicted of one of the
following violations: ... First degree waste of fish and wildlife..."
Hope this helps. I always try to pack out the whole animal so as not to give anyone a reason for a citation (or worse). What you do with it at home is up to you, though technically they could still get you on waste if someone reported you throwing out all of deer except the ..., for example.
The cited RCW still does not define what "waste" really means in a quantitative way, but here it is.
http://apps.leg.wa.gov/RCW/default.aspx?cite=77.15.170
RCW 77.15.170
Waste of fish and wildlife — Penalty.
(1) A person is guilty of waste of fish and wildlife if the person:
(a) Takes or possesses wildlife classified as food fish, game fish, shellfish, or game birds having a value of two hundred fifty dollars or more, or wildlife classified as big game; and
(b) Recklessly allows such fish, shellfish, or wildlife to be wasted.
(2) Waste of fish and wildlife is a gross misdemeanor. Upon conviction, the department shall revoke any license or tag used in the crime and shall order suspension of the person's privileges to engage in the activity in which the person committed waste of fish and wildlife for a period of one year.
(3) It is prima facie evidence of waste if:
(a) A processor purchases or engages a quantity of food fish, shellfish, or game fish that cannot be processed within sixty hours after the food fish, game fish, or shellfish are taken from the water, unless the food fish, game fish, or shellfish are preserved in good marketable condition; or
(b) A person brings a big game animal to a wildlife meat cutter and then abandons the animal. For purposes of this subsection (3)(b), a big game animal is deemed to be abandoned when its carcass is placed in the custody of a wildlife meat cutter for butchering and processing and:
(i) Having been placed in such custody for an unspecified period of time, the meat is not removed within thirty days after the wildlife meat cutter gives notice to the person who brought in the carcass or, having been so notified, the person who brought in the carcass refuses or fails to pay the agreed upon or reasonable charges for the butchering or processing of the carcass; or
(ii) Having been placed in such custody for a specified period of time, the meat is not removed at the end of the specified period or the person who brought in the carcass refuses to pay the agreed upon or reasonable charges for the butchering or processing of the carcass.
[2014 c 48 § 8; 2012 c 176 § 16; 1999 c 258 § 5; 1998 c 190 § 21.]