Very Helpful
Melissa answered every question I had some before I even asked. She was thorough and very resourceful.
By Zorali
Sunday, November 8, 2026 · Customer reviews of US businesses
The Fair Hearing score
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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.
Showing 541 reviews with 5 stars · Clear filters
Melissa answered every question I had some before I even asked. She was thorough and very resourceful.
By Zorali
The young lady who handled my appointment scheduling was wonderful! She gave me all the information I needed, took care of everything in an extremely timely manner, and was very kind and understanding. She made me feel like my situation was important and that she genuinely cared. Hard to find service like this these days!
By Blake
Michelle really was great. She helped me negotiate the requirements and set up an installation for me for when I wanted. Truly outstanding, friendly and professional!
By Theodore
Great customer service, I had my original appointment set at 9am I asked to get it changed to a different time and Kristin handled it promptly, due to a mix up on my behalf I had to reschedule again, back to my original time and she once again took care of me. Thank you!
By johnny
It works like you would think one should work,I drink Starbucks with cream and sugar . no mid reads there . I smoke cigarettes. No mid reads there. It is a punishment in my case,, but it operates well. My Freind martin has had nothing but trouble with his 22 violations and I was there, I live with him he is in a wheel chair and reliesbon me to do everything for him . alco lock has cost him tons of money. Poor service poor equipment. Guardian was a huge fwinner in my book
By Justin
Knowledgeable customer service
By Kelly
Very helpful, very nice, painless
By Gary
Two of the girls (Tawanda and Danielle) went above and beyond to process my forms so quickly so that I could have my interlock install at a convenient time. They turned it around in less than a day!
By Robert G.