3a33edef_Euthanasia___Approved_Methods__3
[0] Efficacy & comments [1] Highly effective when appropriately administered; acceptable IV and IP in small animals [2] Highly effective, some clonic muscle spasms may be observed [4] Effective, but time required may be prolonged in immature and neonatal animals [5] Effective; acceptable only when equipment is properly designed and operated [6] Highly effective for special needs [7] Effective but expensive [8] Effective but expensive [9] Effective but expensive [10] Instant loss of consciousness but motor activity may continue [3] 
Highly effective provided that subject is sufficiently exposed, Not ether
Euthanasia - Approved Methods
3