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The EDS team come from slightly different backgrounds collaborated to provide an effective and efficient  methamphetamine decontamination company. 

Shanan Stewart

Managing Director
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After playing professional cricket for 13 years, I became a qualified builder and recognised there was a gap in the market for a safe, effective methamphetamine decontamination system.


Remediation was labour intensive and many houses had to be relined.   I believed there had to be a more efficient solution. 

I could see similarities in the usage rates of methamphetamine in the US to New Zealand.  My research took me to Utah, USA to gain more knowledge and understanding of the epidemic and how to decontaminate properties using a proven product and best practice cleaning methods. 

Apple Environmental Meth Remover was my chosen product after much research to bring to the New Zealand market.

Hills Laboratories in NZ have tested and confirmed this product and our cleaning methodology complies to NZS8510:2017.  

Culum Retallick

 General Manager - Waikato / BOP
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I grew up in North Canterbury, Christchurch and I was educated at Shirley Boys High School. After leaving school I had a professional rugby career till I was 33.


After finishing my rugby career, I joined the EDS franchise and the decontaminating industry.  As a business owner/operator I can be efficient and effective in my work but also have the flexibility to spend time with my family.


My professional sports career of 10 years, taught me decision-making skills under pressure, and that following a proven process was key to successful results.   I apply these same principles in the decontamination industry.  Following the correct process achieves results that make my customer's houses safe and healthy again.

Bryce Fieton

Business Manager - Lower South Island
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Originally from Waikato, I now live in Southland with my family of five.  I really appreciate what the Lower South Island has to offer in regards to lifestyle. 


I got into the Meth decontamination business after talking to my good friend Culum who made me aware of the issues meth contamination causes families and their homes.  I already had an awareness of this, but he reinforced this on a National level and pointed out there is something I can do to help. 


It’s a good feeling to have the knowledge and skills to remove meth contamination from family homes and investment properties. We use a validated product compliant with the NZ Standard 8510:2017,  its eco-friendly, and leaves no harmful residues.   It's great being part of the solution.

Lee McDonald

Operations Manager - Lower South Island
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I grew up in Wellington, lived in Melbourne for 7 years and moved to Invercargill to enjoy the easy lifestyle the city offers without the hustle. Southland is a fantastic location but it's saddening to see how Meth is affecting the lives of families and homes where we live and throughout NZ.  


My business partner and I had an invitation to get involved in this company and decided to be part of making meth contaminated homes healthy again. 


We like the product we use and have been able to assist people with the removal of meth contamination from their home/investment property.   That in itself is a good feeling knowing we are making a difference. I have always taken pride in my work and like seeing things through.


Eco Decontamination Systems (“EDS”) is a company with over 30 years of combined experience from within the drug detection and cleaning industry. We specialise in the decontamination of methamphetamine contaminated homes and training new contractors in our unique eco-friendly cleaning system throughout New Zealand.

Taking into consideration New Zealand’s eco-friendly values and vision, EDS choose to partner with Apple Environmental (USA).    Apple Environmental produces one of the world's leading methamphetamine decontamination products.

Hill Laboratories and E.S.R. have tested and confirmed Apple Environmental Meth Remover and our cleaning methodology comply with the NZ Standard for Testing and Decontamination of Methamphetamine-contaminated Properties (NZS8510:2017).

Our Director, Shanan traveled to the USA and undertook significant product-specific training at the Apple Environmental facilities located in Utah. Whilst there Shanan undertook technical training on the effects of methamphetamine use, focusing on the ongoing issues that it creates within our homes and communities and the process to ensure the effective removal of this poison from homes.


The Eco Decontamination Systems team are highly qualified, friendly, professionals, who are dedicated to ensuring the stresses of methamphetamine decontamination are taken care of in the safest way possible. 


Combining all of this expert knowledge Eco Decontamination Systems (EDS) was formed.

I found Shanan to be proactive, motivated and efficient from the first phone call to inquire about a meth clean.  It's for this reason I chose to have this company come into our rental property and carry out the required work. Obviously, it's a stressful time when your biggest asset has been contaminated, and I found Shanan to be a problem solver and no issue was an issue.  He collected the keys, got the job and certification complete and allowed us to focus on other priority conversations.                                                                                                                                  Julia McLean, Rangiora

Shanan and his entire team were total professionals and very easy to deal with. They were able to answer any questions/concerns we had and kept us updated every step of the way. We are really satisfied with the results of their work and would happily recommend Eco Decon Systems to anyone finding themselves in need of a reliable, honest and thorough decontamination service.

                                                                                                                                                                                                                                                                                                 Margaret L, Auckland

We recently engaged the services of Eco Decon Systems for one of the properties under our management.  Throughout the whole process, we found the team very informative and easy to deal with. They showed great urgency especially with Christmas looming.  I would have no hesitation recommending them to anyone else in the Christchurch region.  We will certainly be contacting them again if we require this type work in the future.                                                                                                                                                                                                                 James – Property Manager, CHCH


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