About Us

crime scene clean up company owner James Herold

James Herold is the owner of Bio-One Henderson. He grew up on Long Island, NY and moved to Las Vegas in 1998 to pursue an education in business. His venture into the world of business first began with a flooring installation and sales company. With an expansive amount of business knowledge, James' seized the opportunity to become a member of the Bio-One family. He has found great success both professionally and personally since acquiring the business. He is dedicated to helping people find ease during a very difficult time in their lives. As well as building and maintaining meaningful relationships with first and second responders in the community.

You will speak with the owner directly.  No answering machines or call centers. 


When a suicide, homicide, or traumatic death occurs, Bio-One is the best choice for assisting victims and their families.​ We partner with local authorities, communities, emergency services personnel, victim services groups, hoarding task forces, apartment communities, insurance companies and others to provide the most efficient and superior service possible.



Every company performing any sort of decontamination or cleanup services in this industry in Henderson, Las Vegas, North Las Vegas and Boulder City, Nevada needs to have the correct training. Bio-One hires and trains highly skilled technicians with all the certifications to get the job done. We also understand that this is about helping you get through a tough situation. Our company motto is "Help First, Business Second." Bio-One continues to be the most compassionate organization in the industry. 


1. A call is made to our owner.
2. Our owner will then go through in detail the steps that need to be taken. 
3. A time is then set for the Bio-One Henderson team to complete the job.
4. Payment is addressed after cleanup as it is our first priority to complete decontamination in a discreet and compassionate method for all Bio-One clients.  Getting the job done is our priority.


  • We don't require payment before or at time of service.
  • Insurance covers the cost of 95% of the work we do.
  • You can reach the owner directly 24 hours a day, any day of the week.
  • We can typically be at the scene or job site within one hour.
  • Our clean up or recovery services are typically completed within a few hours.
  • Materials with blood or body fluid on them must be disposed as a biohazard. We have necessary training, licensing and insurance.
  • We have a flawless record, without a single citation or fine in 20+ years of operation.
  • If you have any questions or concerns, feel free to call and if for any reason we are not able to help, we will connect you with someone who can.

Latest Reviews


    Don't have Facebook or Google account? Don't let it stop you! Leave your review here by filling in the form and we'll publish it on our website!

    Amazing Customer Service - by Samantha, 2020-01-20 15:01:07

    4.62 / 5 stars

    I can not say enough how truly thankful I am for this company! I needed help urgently and Danny answered the phone after business hours (thank you again!) and was beyond patient and accommodating. They were very thorough with their work and made sure I was satisfied. Something I really appreciated was how discreet they were with their job. It was a tough time for me but they made sure to put my feelings first and made me feel at ease and comfortable. Thank you for everything!

    Was this review helpful?

    Mold Removal Nightmare - by Holly M., 2019-07-04 02:07:12

    5.00 / 5 stars

    After discovering mold in nearly the entire wall of my kitchen sink, in and under my cabinets, and battling a landlord that honestly could have cared less- Danny got the job done! I called Tom at 7:00am almost in tears and frantic, as I have a 4 yr old that lives with me and someone with cancer. I explained the wall was already opened up and had been for 2 days, now I needed someone professional to come remove it safely and completely. Danny showed up less than an hour later and knew exactly what to do. We felt comfortable enough with them to leave a key so they can let themselves in while we were at work. Their professionalism, honest concern & compassion really showed from the first conversation, all the way through to the end of the job. 10/10 would recommend, every single time!

    Was this review helpful?

    Quick response & Fair Rates - by bsquare, 2019-06-27 16:06:03

    5.00 / 5 stars

    Danny responded and completed the work very quickly & efficiently... all at a reasonable cost. This will be my first and only call in the future.

    Was this review helpful?

    Excellent Service - by Mike P., 2019-03-10 13:03:35

    4.58 / 5 stars

    Unfortunately we had to remove the carpet in my fathers home after he passed away while living on his own. We are from out of town. Danny was able to meet us on a Sunday morning while other companies we called wanted to wait until Monday. Thank You!

    Was this review helpful? 1

    Much Gratitude - by Ela Wehrmann, 2019-03-04 18:03:55

    4.58 / 5 stars

    Danny and his team were amazing. I live in Alaska and flew down to take care of a death in my family home . Not only did he take care of the bio clean up but cleaned out a home so it look renewed. So trustworthy!!!!!!!!

    Was this review helpful? 1

    A horror not easy to forget. - by Janet, 2019-02-23 12:02:11

    4.58 / 5 stars

    Tenants left all floors covered in pet urine, feces, food. Every sink, toilet BLACK. Kitchen was caked in filth. Sight, smell overwhelming! Danny and crew were amazing, professional, fast, thorough & affordable. Rescued me and my home. Very kind people.

    Was this review helpful? 1

    Friendly compassion - by Kristyna Ferren , 2018-09-08 19:09:09

    5.00 / 5 stars

    I want to thank Tom and Danny for all their hard work & care they have shown my husband and me during a stressful time. They were working with us with the greatest level of compassion and friendliness, reducing so much of our anxiety. Thank you!!!

    Was this review helpful? 2

    Complete Home Clean Up - by Mario Agatone per Rebecca Lawrence , 2018-08-23 18:08:09

    5.00 / 5 stars

    I can’t say enough about Tom & Danny on the professionalism & personal approach they took to the exceptionally great job of cleaning our house! Words & emotions can never express our gratitude, appreciation to them for their hard work! “TY” Tom & D

    Was this review helpful? 2

    Hoarding Clean-up - by Liz Frost, 2018-08-10 17:08:51

    4.50 / 5 stars

    I can’t thank you enough! You helped my brother more than all the doctors he's been to since Vietnam.  Giving him a new start after his wife died means everything! You have restored our faith in humanity with your integrity, hard work and compassion!

    Was this review helpful? 2

    - by Mysti L., 2018-05-18 08:05:46

    5.00 / 5 stars

    Thank you Bio-One, for a job well done. Look foward to working with you again.

    Was this review helpful? 1



    out of 20 ratings