Excellent help from Stephanie!!!
Excellent help from Stephanie!!! she truly did everything she could do to help us.
By Marcus
Sunday, November 8, 2026 · Customer reviews of US businesses
The Fair Hearing score
Great
813 reviews
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Honesty, pricing, process and quality scores appear once 5 customers have rated them.
Guardian Interlock provides ignition interlock systems (also known as "blow and go" or "car breathalzyer" for people who need or want them after a DUI/DWI arrest. We provide high quality services and devices to make the process of installing and using an interlock as easy as possible.
Guardian Interlock (guardianinterlock.com) has 813 customer reviews on The Fair Hearing, with an average rating of 4.0 out of 5.
813 approved reviews, newest moderated first
Excellent help from Stephanie!!! she truly did everything she could do to help us.
By Marcus
Very thorough and efficient. Got installed the next day.
By Sam
She was very polite and helpful.
By Kathryn
The person who took my appointment was very helpful and kind. Well done.
By Wayne
Tawana out of Cincinnati made a process I didn't want to go thru pleasant. She was very thorough and informative. Please change your on hold music though. Im sure classical dose not suit the multitudes.
By Richard
Very polite and helpful representatives!
By Tanya
Melissa was VERY helpful, knowledgeable, courteous. She is excellent at customer service!
By Ronni
Tamara did a great job with helping and info
By Brad