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86 2019 INDUSTRY RESOURCE DIRECTORY Deodorizers are an essential part of most portable sanitation operations. The following information is intended to provide basic information about the options available to PROs. For detailed analysis of what deodorizer solutions are the best fit for your needs, check with representatives of the companies that manufacture and sell these products. Tip #1: Ask Questions and Understand How Deodorizers Work. Regardless of the type of deodorizer your company chooses to use, expect that virtually all of them will include the following elements: • Odor control to neutralize or remove the unpleasant scents that are natural when organic matter is breaking down • Fragrances to offer an alternative scent to the natural ones being neutralized or removed • Dyes to color the water in the tank and promote the perception of cleanliness • Surfactants to lower the surface tension so waste is more easily covered by the water in the tank and dispersed Tip #2: Match the Type of Deodorizer and the Delivery Method to Your Business Needs. Deodorizer products currently available generally fall into three broad categories and two delivery methods. There are several considerations in choosing from among them: What is allowed in your area, cost, and convenience are probably the most important ones. Formaldehyde—a biocide that masks odors and reduces the production of odors • It's the oldest deodorizer, at one time was the most common, and it still is perceived as a very powerful solution, especially in hot climates • Tends to be less expensive than other product classes • The substance is highly regulated in some states and municipalities • The US Toxicology Program lists formaldehyde as a "known carcinogen," while the World Health Organization suggests it is a "possible" carcinogen Formaldehyde-free biocides—work by preventing the growth of bacteria and subsequent odors in the tank, paired with one of many pleasant scents to mask odor • These products actually break down the source of odors in a tank; they are still constantly being updated and improved • Break down solids and paper to reduce mounding • Depending upon the components in the biocide, these products may be scrutinized at waste treatment facilities; regulations vary worldwide. Your supplier can provide you supporting documentation to assist you at the disposal facility Biological "green" deodorizers—work by masking and/or breaking down odor molecules to odorless ones, using odor capture technology, or natural odor neutralizers. Note: There is no standard definition of the term "green" products. Be sure to ask how the manufacturer defines the term • Most "environmentally friendly" of the three product classes • The products are beneficial to the treatment plant, so loads containing only green products are relatively easy to dispose • Experts agree the trend is toward more "green" (environmentally friendly) products • PROs using these products can promote their eco-friendly approach • In general, green deodorizers are perceived as less effective than other options. They take the most time to activate in the tank and are sometimes viewed as not lasting as long as other product types • Temperatures greatly affect the performance of these products. In cold climates they are particularly ineffective DEODORIZER TYPE FEATURES/BENEFITS CONSIDERATIONS Liquid • Service technician can change the strength of the charge depending on the need • Charge can be premixed to shorten servicing time • Available in a wide variety of strengths and fragrances • Liquids can be messy to deal with • Spills can be costly —both due to wasted product and the requirements of cleanup • Difficulty controlling over-usage can increase the cost per service • Storage and containment can be an issue for large volumes DEODORIZER DELIVERY METHOD FEATURES/BENEFITS CONSIDERATIONS DEODORIZERS: WHAT YOU NEED TO KNOW Better worksites. Better weekends. Better world. EXCLUSIVE MEMBERS-ONLY CONTENT REDACTED Join us now at www.psai.org for access to this valuable information.