About Us - Mr. John Portable Toilet Rental

Our Approach

Currently Mr. John and Tri-Boro Trailer employ more than 70 people and offer a wide range of products including portable toilets, restroom trailers, office trailers, storage containers and ground level office containers. Mr. John's restroom fleet now exceeds 5,000 poly-plastic units including standard, flushing, and wheelchair-accessible models. Mr. John continues to focus on offering a diverse product line and strives to provide the highest level of customer service.

Management & HR

Michael McCarthy

CEO and Chairman

Chris McCarthy

President

Chris was born and raised in Highland Park, NJ, leaving the Garden State in 1997 to matriculate at the University of Pittsburgh. He graduated from Pitt with a BS in Economics and holds a certificate from the Joseph M. Katz School of Business: Entrepreneurial Fellows Program. Currently the company Vice President, Chris joined Mr. John full time in April 2000, having worked summers since 1994. He is a second-generation member of the family business, and has held many jobs over the years, including- assembling, demolishing, pumping, cleaning and delivering portable toilets, servicing large events, dispatch, marketing, sales, HR, safety, and accounting. Chris lives in Pittsburgh’s historic South Side with his fiancé Caitlin and their dog Basil, who also serves as Mr. John’s official mascot and office pup. When not thinking about toilets he enjoys cooking (and eating), exercising a respectable and occasionally above average hoop game, teeing it up with friends and family, and enjoying Pittsburgh’s unique neighborhoods, bucolic parks, and outstanding restaurants.

Jeff Wolfarth

Vice President

Jeff grew up in the Highland Park section of Pittsburgh. He graduated from Peabody High School and likes to say he received his degree from Mr. John University. He worked the summers of 1972 and 1973 repairing wooden portable toilets and started full time at Mr. John in May of 1977. He has been fortunate to be part of the growth of the company and has done just about every job there is (he has the stories to prove it). Jeff is proud of the time he spent on the Board of Directors of the Portable Sanitation Association International (PSAI) where he served as President in 2009. He moved to Cranberry Township in 1983 where, with his high school sweetheart Val, they raised their four daughters Erin, Megan, Emily and Kelly. When away from work he returns to Pittsburgh for food and recreation, he is a big Pens and Steelers fan and enjoys playing one of his many guitars.

Eileen McCarthy

Executive Administrative Assistant

Adriana Stahl

HR & Safety Manager

Adriana is a Pittsburgh transplant, originally from Northern Virginia, where most of her family still lives. She now lives in Cranberry with her husband, Evan, and their two dogs, Sadie and Copper. Adriana and Evan are typically busy on the weekends traveling and visiting friends, exploring restaurants and bars, and working on house renovations. After graduating from Penn State University with a B.A. in Labor Employment Relations and a focus in Conflict Resolution, she began her career at H.J. Heinz Company as a Management Trainee. She spent some time in Benefits, then looking for a more general role, she was promoted to HR Operations. She was primarily responsible for managing the people budget, aiding in recruitment goals, and tracking performance. After Heinz, she changed jobs to work at Price Waterhouse Coopers as a Campus Sourcing Analyst, where her focus was hiring college students to meet department goals. After some time, she decided working at a major corporation wasn’t a good fit for what she wanted to accomplish with her career. In 2016, needing a change, she decided to pursue a career path at a family owned company and has been with Mr. John as their HR Manager, ever since. She has truly loved every minute of working at Mr. John and is excited to see what our future holds!

Beth Mastro

Recruiter

Beth Mastro attended Indiana university of Pennsylvania and received a Bachelor of Science degree In Human Resource Management. She has recently joined the team at Mr. John as our recruiter. In Beth's free time she likes to travel, learn anything new, and attend Steeler and Penguin games with her family. Beth currently lives in Canonsburg with her husband Pete, son Brendan and puppy Lola.

Sales & Marketing

Matt Ballas

Sales Manager

Stefania Demczak

Sales Supervisor

Stefania Demczak began her career at Mr. John in 2012 as a Customer Service Representative and is currently serving as the Sales Supervisor. She graduated with a BS in English Literature from Indiana University of Pennsylvania in 2008. Outside of the office, Stefania and her husband, Keith, live in Castle Shannon with their daughter, Olivia, and son, Charlie. Her passions include literature, cooking, crochet, indie rock, and adding to their ever growing vinyl collection.

Gigi Oliva

Customer Service Representative

Gigi Oliva comes to us from the Cheesecake Factory where she worked as a waitress. Prior to that she was a customer service representative for CVS Mail Order Pharmacy. In her spare time Gigi enjoys doing photography. She has experience in wedding photography, family portraits, senior pictures and much more. Gigi now lives in Pittsburgh and is excited for her future with Mr. John.

Jenny Flora

Customer Service Representative

Jenny a Pittsburgh native, currently resides in Emsworth and has been with Mr. John since 2016. She loves the family atmosphere at Mr. John and enjoys working with her little brother Jeff. What you may not know about Jenny is that she is afraid of bridges. Jenny is currently a full time student at CCAC where she is studying Diagnostic Sonography. In her car you can find her rocking out to pretty much anything and her favorite thing to do in the summer is be on the water whether it’s boating, canoeing, swimming, jet skiing or tubing. She is an aspiring dog mom, and it currently looking to adopt a rescue pet.

Kameron VanBuren

Customer Service Representative

Brandi Ketter

Marketing Director

Brandi Ketter has been a part of the Mr. John family since 2000. She has played many different roles with her current being Marketing and IT Director. She loves her job for the creativity, interaction and innovation it allows. In her free time, Brandi likes to enjoy her family, watch her children grow and rock out to 80's music! A Pittsburgher all her life, she now lives in Jefferson Hills with her husband, Tim and her two precious kids, Finley and Jake.

Accounting

Kim Charlton

Accounting Manager

I started working for Mr. John when the office was a trailer in Lawrenceville almost 28 years ago. The small office was loaded with printers that sounded like helicopters were landing on the roof, fax machines that loaded like toilet paper and a route board with movable magnetic labels; all the new innovated tech of the times. The floppy disks were as big as LP albums and all the journals were loaded into them. I was hired to start with the new Unix based software and the 3 ½ inch floppy disks. I had just graduated from CCAC with a degree in Accounting and was ready to raise my two children who were very instrumental in helping me get that degree. The jobs I had before this were not very challenging. This was not the case at Mr. John. This one was a true blessing in my life. Not only did I get to put my accounting skills in gear I also learned a lot more of those skills from the company as they were ascending a rough road up to becoming what they are today. I was also able to do more than just accounting; I did almost every position there was here including learning to drive a skid steer loader. I painted toilets in the spring and was given the opportunity to start a Safety Committee which took us three years to receive certification from the state. After a lot of hard work, huge binders filled with MSDS sheets, shower portable units turned into eye wash stations, chains, chalks, accident reports and dedication by many employees and we finally did it. I also began dual roles as the HR and Accounting manager and was able to recommend two of our beloved drivers into the PSAI’s driver of the year competition and they both brought home the glory! One was the first female ever to win that award. I was given the opportunity to recognize the many gifts our employees brought to the company through the President’s Day Meetings we held once a year. I also started the News Flush, a monthly publication focused on the safety and appreciation of our employees and industry with a splash of humor. Not only did I start with a new software, I also was given the opportunity and trust to put into place our operating and accounting software along with many payroll and time clock systems. I have been given so much experience, trust and knowledge and yes, love from what I consider a true family. We have grown so much and hired so many people in these past years that I am exclusively accounting now but there is much more to account for. I have watched this company suffer, sacrifice, grow, reach, blast off, sink, dig out, soar, say goodbye, say hello, take risks, invent, challenge and evolve all with the loyalty, integrity, love and dedication to it’s employees, communities and customers. I am so proud to be part of it and I have been in awe of witnessing its growth to what it has become. I truly thank God for this path He put me on. God is the number one in my life here and outside of my life at Mr John. I love my family of those two children who patiently shared me with Mr. John and later both worked here; one still does, my husband, my son in law, my two grandchildren, my church and friends. I have lived a very blessed life and I as of my morning prayers, this company is still a blessing that I count and always will be.

Ashley Gensel

Billing Specialist

Ashley started with Mr. John in September 2008 as Quality Control. Currently holding the Billing Specialist position in the Accounting Department. She has played many roles including quality control, operations, Accounts Payable and currently Accounts Receivable. She is the youngest of 3 girls and a very proud aunt of 3 nieces & 2 nephews. In her free time, she loves to spend time with friends and family, shopping and exploring different restaurants and pubs. Her favorite tradition has become the week she spends with her family in Myrtle Beach. She hopes to one day scratch, a trip to Europe and owning her own camp from her bucket list. Living in Pittsburgh her entire life she still resides in the West End area of Pittsburgh with her longtime boyfriend Pete and hermit crab “Jimmy”.

Jaime Gensel

Credit & Collections Specialist

Jaime Gensel has been a part of the Mr. John team since February 2006 and has some experience in each department. Her current title is Credit & Collections Specialist. When she’s not focused on the numbers in Accounting, she loves to spend time with her two amazing daughters, Morgann & Deanna, who are currently attending local Pittsburgh University’s. She also enjoys a night out with her fiancé Shawn and playing with her newly rescued cat, Buddy. She has a passion for health, fitness, bringing flea market finds to life, music, dedicating time to her friends and family and traveling, especially to her favorite vacation spot, Myrtle Beach, South Carolina. She grew up and currently still resides in the Sheraden area of Pittsburgh.

Katie McCarthy

Billing & Payroll Specialist

Katie McCarthy has lived in Pittsburgh, Pennsylvania but currently lives right outside city limits in Dormont Borough. She has been working in the Accounting Department since 2009. Outside of work she enjoys practicing yoga and doting over her furry children, Toulouse the hair-tie loving cat, and her dog, Winston, who is the best and perfect.

Kade Grevas

Accounts Payable Specialist

Kade comes to us from PPG, where he was employed for over 4 years as Credit Administrator. Prior to this role, he was an Accounts Payable and Operations Clerk, specializing in freight at Harsco Infrastructure. Kade graduated from Franciscan University of Steubenville, with a Bachelor of Science in Accounting. He considers himself a connoisseur of geek culture, and he enjoys playing games in his spare time. Kade is originally from the Hudson Valley region of New York and now lives in the Crafton/Ingram area with his wife Megan and their baby daughter Seraphina.

Operations

Grace Savatt

Customer Service Representative

Grace has been part of the Mr. John family since 1994. She has held many different positions in the Mr. John Company including sales, operations & dispatch, customer service and trailer sales. Grace was born and raised and still resides in McKees Rocks where she spends most of her time with her daughter Jamie and her 2 dogs Jake and Tilly. On occasion, she will travel to Ohio to visit her other daughter Jennifer, son-in-law Chris and her two grandsons CJ and Taylor. She enjoys reading, crafts and cooking large dinners for her family.

Alex McCarthy

Continuous Improvement Specialist

Alex was born and raised in Pittsburgh, PA, and has been with Mr. John since the summer of 2001, starting as a part time employee over the summer and becoming a full-time employee in January of 2009. He is currently the Division Manager of Tri-Boro Trailer, responsible for the operation of the entire trailer division. In his free time, Alex enjoys golfing, playing softball, snowboarding, exercising, and cheering on the Steelers Pirates Penguins and Pitt. He also enjoys watching Survivor, and tempting fate with a scratch off lottery ticket or two. Alex currently lives in the South Side of Pittsburgh with his wife Candice and their cat Samson.

David Kropf

Operations Manager - Mr. John

David was born and raised here in Pittsburgh, Pennsylvania. He is a graduated from Slippery Rock University, where he studied Business Administration/Marketing. After receiving his diploma, David spent a handful of years starting his career outside of the Portable Toilet Industry. In the summer of 2015, David made his way into our family as our Operations Manager. David’s three children, and wife reside in Wexford, PA. Most of their time is spent following their kids around to the softball and soccer fields, dance classes, and gymnastics. When given the opportunity David and his wife enjoy taking weekend trips, exploring new restaurants throughout the city and spending time with their large extended families. Some of David’s favorite activities include adult co-ed softball, family cornhole tournaments and the occasional weekend mornings spent at the YMCA swimming pool.

Dale Nicholson

Service Manager

Frank Shelleby

Service Dispatcher

Frank joined Mr. John in February 2015 as on Operations Specialist, soon becoming the Service Dispatcher. He uses his knowledge and experience of the Pittsburgh area to build and strengthen relationships with customers and drivers, allowing Mr. John to deliver a seamless customer service experience. He enjoys the challenges that each new day brings. Frank was raised in New Kensington, living in several city and North Hills neighborhoods before settling back in New Kensington to raise a family of his own. When he’s not working, Frank enjoys spending time with his two wonderful children, reading, fishing, watching movies, and attending live stage performances.

Arvin Young

Service Dispatcher

Arvin Young grew up in the Stanton Heights area of Pittsburgh. He studied business management at CCAC Boyce Campus. Concurrently he works at Mr. John where he provides employee support and performs many other duties. Prior to Mr. John he worked at Red lobster as a Line Coordinator Certified as a Grill Master assuring a quality dining experience. Inspired by his father, he learned how to repair cars and small engines. In his spare time he likes inventing, bowling and fishing and is blessed with a supportive family and group of neighbors and friends. Arvin makes sure everyone feels appreciated to ensure no one is feeling left out building strong relationships at work as well as in the community.

Joe Hatherley

Operations Manager - Tri-Boro and Mr. John Septic

Mike Hatherley

Fleet Manager

Nikki Hogue

Fleet Service Specialist

Nikki Hogue graduated from West Virginia University where she was also a member of the WVU Women’s Rugby team. She is now the Fleet Service Specialist and has been with Mr John since 2008 where over the years she has been the Assistant Operations Manager, Auditor, Delivery Dispatcher, & Safety Coordinator. She also finds time to be a fitness instructor / personal trainer. Her life as a single mom can be hectic but she loves to watch her sons Cameron & Dylan play sports, and she even occasionally coaches.

Josh Filipovitz

Mechanic Non CDL

Mark Herbinko Jr.

Mechanic Non CDL

Drivers