Walter is the best
Went the extra mile very helpful
By Eddie
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
Went the extra mile very helpful
By Eddie
Shawnna (sp) was extremely helpful in expalining the installation proccess, made an appointment for me and strongly urged me to call her if there were any questions. However I would like to review the costs as she noted that the installation fee be waived and the monthly fee will be $65.00. I would appreciate an email to that affect. Thank you, Francis
By Francis
Tawana was a excellent in getting me scheduled as fast as possible.
By Jesse
Customer service was great
By Angela
I moved to White City, Oregon and work M-F 8-5. I requested a sat appointment and was told that I would need to drive 4 hours up to Woodburn, Oregon to have this. Ridiculous! I cannot be the only person who works Monday thru Friday
By Dominic L.
I live and work off a very busy three lane road called Commercial Blvd in FL. I drive a manual VW GTI, so I have to steer with my knees while I'm shifting and using the device. Florida already has the worst drivers I have ever seen in my life, and pulling over to breath into the device is more dangerous than steering with my knees! Also, there are way more affordable & state approved interlock device providers than this one..
By Robert L.
PHONE REP. MELLISA WENT ABOVE AND BEYOND TO MAKE THIIS TRANSACTION HAPPEN.
By William
Great experience, easy to set up!
By Collin