wheelchair accessible porta potty

How Many Toilets Do You Need Per Person?

So you’re thinking about placing an order for porta johns, but you have some questions. More likely than not, one of those questions is how many? If you’re hosting an event, the general rule of thumb is to provide at least one restroom per every 50 people. The larger the crowd, the more this number… Read more »

row of porta potties in downtown Pittsburgh

Porta John Science: How do Portable Toilets Work?

Porta johns. Porta potties. The portable toilet. No matter what you call them, these standalone restrooms are always there for us when we need them most. But where exactly does all of that waste go? And how do portable toilets actually work? We’re here to give you the explanation you’ve been waiting for. The process… Read more »

Do You Need a Permit for a Porta Potty?

If you’re planning to host an event and know you will need to provide restroom facilities, you may be wondering about the details and requirements to do so. Keep reading to learn what they are. Many localities require you to apply for a special events permit when planning a gathering that will involve more than… Read more »

mr john porta potty overlooking pittsburgh

How to Empty a Portable Toilet

If you’ve ever used a porta potty, you may have wondered if and when a toilet of its size is ever emptied. The answer, of course, is yes. In sanitation worker terms, it’s called “servicing.” Servicing involves emptying the toilet of waste and also several other steps to restore the restroom back to clean conditions…. Read more »

How much does it cost to rent a porta potty?

How Much Does it Really Cost to Rent a Porta Potty?

Porta potties aren’t just for construction zones. They can be utilized during large scale events such as concerts and weddings, or other events like TV shoots, long camping trips and more. There are many factors that determine the pricing structure for renting portable restrooms—which can include location, availability, length of rental, permits and maintenance fees…. Read more »

wooden outhouse

What You Should Know About Modern Portable Toilets

At Mr. John, we’re proud to offer so much more than the standard porta potty. Believe it or not, there are all sorts of varieties and sizes to choose from. For instance, The Flush Plus, which includes a hands-free pumping flush and a self-contained fresh water sink. Other upgrades within this model include a mirror,… Read more »

Porta Potty History: Why is a Toilet Called a John?

We all have our favorite endearing term for the restroom or, more specifically, the toilet. A common term that most have heard, whether you use it or not, is “the john.” If you’ve ever wondered where the term came from, we’re here to uncover the mystery. Taking a look through history, there are actually two… Read more »

Mr. John & Tri-Boro Trailer Announces New Controller

Mr. John & Tri-Boro Trailer are excited to announce the promotion of Alex McCarthy to Controller, effective June 22, 2020. Alex will be responsible for managing the company’s finance and accounting departments, with a focus on analytics and data driven decision making. Alex joined Mr. John in June 2001 as a seasonal employee and started… Read more »

Mr John Sani Stand - free standing hand sanitizer stand

Introducing the Sani Stand!

In addition to our Freshwater Sink, we are now excited to offer another free standing hand cleansing option, our NEW Sani Stand!   Our Sani Stand takes seconds to setup, is easy to relocate and has a heavy duty base that helps prevent tipping. Each mobile sanitizer station includes two hand sanitizer dispensers, and is delivered filled with hand… Read more »

10' Storage Container and 40' Container Office and Storage Combination

10′ Containers and 40′ Container Office & Storage Combos added to our Fleet!

In addition to our 20′ and 40′ Storage Containers, Mobile Office Trailers and 20′ Ground Level Office Containers, Mr. John and Tri-Boro Trailer now offer 10′ Storage Containers and 40′ Container Office & Storage Combos!   10′ Storage Container Tri-Boro Trailer’s 8×10 storage containers are safe, convenient, and small enough to fit in a standard parking spot…. Read more »