Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2020	Aug. 13, 2020
Document and Entity Information [Abstract]
Entity Registrant Name	SenesTech, Inc.
Entity Central Index Key	0001680378
Document Type	10-Q
Document Period End Date	Jun. 30, 2020
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity File Number	001-37941
Entity Incorporation, State or Country Code	DE
Entity Filer Category	Non-accelerated Filer
Entity Interactive Data Current	Yes
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		3,398,832
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2020