Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2025	Nov. 07, 2025
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2025
Document Transition Report	false
Entity File Number	001-37941
Entity Registrant Name	SENESTECH, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-2079805
Entity Address, Address Line One	13430 North Dysart Road,
Entity Address, Address Line Two	Suite 105
Entity Address, City or Town	Surprise
Entity Address, State or Province	AZ
Entity Address, Postal Zip Code	85379
City Area Code	(928)
Local Phone Number	779-4143
Title of 12(b) Security	Common Stock, $0.001 par value
Trading Symbol	SNES
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		5,223,015
Entity Central Index Key	0001680378
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q3
Amendment Flag	false