The article offers interesting info.
If murder was the primary goal, they did not need so many potential loose lips.
An IED or street assassination would be much more effective and private.
They only ever needed to copy Israeli and Russian tactics.
Nine days after journalist Jamal Khashoggi was killed in the Saudi consulate in Turkey's Istanbul on Oct. 2, a chemist and toxicologist were sent to Istanbul to get rid of the body and eliminate evidence, Turkish daily Sabah reported on Monday.
Chemist Ahmed Abdulaziz Aljanobi and toxicology expert Khaled Yahya Al Zahrani were part of an 11-member delegation from Saudi Arabia that that entered Turkey via Istanbul's Sabiha Gökcen Airport on Oct. 11 as part of the joint investigation into the disappearance of Khashoggi.
“According to the information we received from a reliable source, the (Turkish; my comment) investigation teams found a blood sample during the search. And a sample was taken from the wall. That means the Saudis couldn't completely eliminate all evidence, said retired murder detective Savas Kurtbaba.
https://www.yenisafak.com/en/world/saudi-experts-spent-six-days-cleaning-consulate-after-khashoggi-killing-report-3465421