For those who wish to spare no expense, why not a Bag of Devouring, planar gate (one way!), or a Sphere of Annihilation? Cheaper would be imprisoned otyughs, gelatinous cubes, or puddings/oozes/jellies.
Could you teleport the contents of a cesspool (into a field in need of fertilizer or such)?
Could you teleport the contents of a cesspool (into a field in need of fertilizer or such)?