Document and Entity Information - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Mar. 29, 2019	Jun. 29, 2018
Document And Entity Information
Entity Registrant Name	SenesTech, Inc.
Entity Central Index Key	0001680378
Document Type	10-K
Trading Symbol	SNES
Document Period End Date	Dec. 31, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity a Well-known Seasoned Issuer	No
Entity a Voluntary Filer	No
Entity's Reporting Status Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Shell Company	false
Entity Public Float			$ 26,395,959
Entity Common Stock, Shares Outstanding		23,560,864
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2018