One crucial but often overlooked aspect of disaster response is the decontamination of companion animals. Decontamination, in simple terms, means removing harmful substances from a body or surface. In a disaster, these substances might include chemical residues from industrial accidents, sewage and fuel contaminants carried by floodwaters, airborne debris from structural collapse, or residues from fires. People may pass through organized decontamination lines staffed by trained responders. But what about the dogs that walk through the same floodwaters, run through the same debris, or lie on contaminated ground?

A groundbreaking study conducted by Prof. Debra Zoran and her colleagues at Texas A&M University tackles this issue head on. Their research paper, titled “Mass Decontamination of Companion Dogs in Disaster: Planning for Personnel, Water, and Time Requirements,” investigates something deceptively simple yet profoundly important. It asks how long it takes to properly wash a dog after contamination, how much water is required, and how many people are needed to do the job safely and effectively. Behind these practical questions lies a deeper insight. Without data, planning is essentially guesswork.

Disasters rarely produce a single type of hazard. Hurricanes churn up sewage, industrial runoff, and household chemicals. Urban fires release complex mixtures of burned plastics, metals, and synthetic materials. Terrorist attacks and industrial accidents may involve chemical, biological, radiological, nuclear, or explosive materials. These substances do not discriminate between species. If they settle on a dog’s coat or paws, they can easily be transferred indoors, onto furniture, into vehicles, or onto human skin.

Dogs are particularly vulnerable because they explore the world with their noses and mouths. They groom themselves. They lick their paws. They lie on contaminated surfaces and then curl up against their owners. A dog that appears outwardly unharmed may carry invisible contaminants that pose risks not only to its own health but also to the people who love and care for it.

Despite this reality, decontamination protocols for companion animals have historically lagged behind those for humans. Working dogs in military and search and rescue roles have received more attention in research. These dogs are highly trained, accustomed to handling, and relatively uniform in size and coat type. Companion dogs are far more diverse. They range from tiny short haired breeds to massive, thick coated dogs. Their temperaments vary widely. Some tolerate baths calmly, while others resist even routine grooming.

Prof. Debra Zoran and her team recognized that emergency planners needed concrete information tailored to companion animals. How much time should be allocated per dog? How much water must be available? How many trained personnel are required? These are not abstract questions. In a large-scale disaster, dozens or even hundreds of dogs might require decontamination in a single day.

To answer these questions, the researchers conducted a carefully structured study involving 63 medium sized dogs. The dogs were drawn from a state facility and were generally healthy, between one and four years of age, and weighed between 20 and 35 kilograms. They represented two coat types: short-coated dogs, such as American Coonhounds and hound mixes, and medium-coated dogs, such as Labrador Retrievers.

The choice of these dogs was deliberate. By focusing on lightly contaminated, medium weight, short to medium coated, tractable animals, the researchers aimed to establish a baseline. If planners know the minimum time and water required under relatively favorable conditions, they can adjust upward for more challenging cases.

To simulate contamination, the team used an oil-based lotion called Glo Germ. This substance is invisible under normal light but glows under ultraviolet light, allowing researchers to see whether it remains on the coat after washing. The lotion was applied to five specific areas on each dog, including under the throat, between the shoulder blades, near the base of the tail, inside a front leg, and between the toes of a rear paw. These sites were chosen based on previous studies that identified common areas where contaminants are missed.

The washing process itself was methodical. Dogs were placed in an elevated tub system designed to allow water to drain away rather than pool under their feet. They were wetted thoroughly from head to tail. Soap was applied and worked into the coat by hand, then rinsed off completely. After washing, the lights were dimmed and a UV flashlight was used to check for remaining contamination. If any glowing residue was detected, the dog was washed again.

Importantly, the researchers measured both the time required to complete the process and the volume of water used. They also compared two types of soap, a standard dish detergent commonly used in animal decontamination and an antibacterial veterinary shampoo, to see if either influenced time or water use.

The results revealed that coat length mattered significantly. Medium-coated dogs required more time and more water than short coated dogs. On average, short-coated dogs took about 6 to 7 minutes of washing time and required approximately 6 to 10 gallons of water. Medium-coated dogs took closer to 9 to 12 minutes and required roughly 8 to 15 gallons.

These figures represent the active washing time. When pre-wash preparation and post-wash drying are included, the total time per dog increases to approximately 15 to 20 minutes. That means a single decontamination line staffed by a small team might realistically process only three to four dogs per hour.

Imagine a scenario in which 50 dogs need decontamination. At three to four dogs per hour, a single line would require 12 to 15 hours of continuous operation. If 50 dogs arrived each day over several days, the burden on personnel and resources would quickly become overwhelming.

Water requirements also scale rapidly. At roughly 10 to 12 gallons per dog, decontaminating 50 dogs would consume 500 to 600 gallons of water. In a disaster setting where municipal water supplies may be compromised or diverted for firefighting and human needs, this is a substantial logistical consideration. If contaminated wastewater must be captured rather than released into the sewer system, additional containment infrastructure is required.

Interestingly, the type of soap did not significantly affect time or water use. Nor was dog body weight a strong predictor of washing time. Coat type emerged as the key variable. The study also noted differences between individual bathers, suggesting that training and technique can influence efficiency.

The implications of this work extend far beyond the walls of a veterinary facility. Emergency management agencies operate on plans. They calculate how many cots are needed in shelters, how much food must be stocked, how many staff shifts must be scheduled. Without data, animal decontamination remains an afterthought or an improvisation.

By providing concrete figures, Prof. Debra Zoran and her colleagues have given planners the tools to incorporate animal decontamination into disaster response frameworks. Their study outlines not only time and water requirements but also personnel needs. A typical decontamination line requires at least four people: one to assess and prepare the dog, two to handle and wash, and one to move the cleaned animal to a drying or shelter area. Ideally, a veterinarian or veterinary technician should be present to assess health, manage behavior, and provide sedation if necessary.

The study also details equipment requirements, including elevated wash areas, hoses with adjustable nozzles, personal protective equipment, muzzles, towels, and containment systems for wastewater. None of these items are exotic. Many can be sourced from farm supply stores or emergency response caches. But they must be assembled and staged before disaster strikes.

A particularly insightful discussion in the paper addresses the question of whether owners should wash their own dogs in human decontamination lines. While this might seem efficient, the researchers note that in practice it often slows the process and reduces effectiveness. Fearful dogs in chaotic environments may resist handling, compromising both safety and thoroughness. Except in special cases such as working dogs or service animals that cannot be separated from their handlers, dedicated animal decontamination lines are preferable.

Beyond logistics, this research touches on something deeply human. Numerous studies have shown that people are reluctant to evacuate without their pets. After Hurricane Katrina, images of stranded animals and grieving owners reshaped national policy, leading to legislation that requires consideration of pets in evacuation planning. Keeping animals safe supports human resilience. It reduces psychological stress and encourages compliance with evacuation orders.

If a disaster response system cannot safely process contaminated animals, it creates a dilemma. Owners may refuse decontamination for themselves if it means surrendering their pets. Alternatively, they may bring contaminated animals into shelters, risking secondary exposure.

By addressing animal decontamination proactively, communities strengthen overall public health. The work of Prof. Debra Zoran underscores that animal safety and human safety are not competing priorities. They are intertwined.

The study focused on medium sized dogs with short to medium coats under relatively controlled conditions. The authors acknowledge that small long-haired breeds, giant thick-coated dogs, heavily soiled animals, and other species such as cats and birds will require additional research. Cats in particular pose unique challenges due to their grooming behavior and stress responses.

Yet every journey begins with a first step. This research establishes a baseline. It transforms a vague notion, wash the dogs, into a quantified process with measurable inputs and outputs. It invites emergency planners to ask practical questions in advance rather than improvising under pressure.

As climate change intensifies storms and wildfires, and as urban environments grow more complex, the intersection of human and animal safety will only become more prominent. The quiet, methodical work of researchers such as Prof. Debra Zoran ensures that when the next disaster strikes, responders will not be guessing how many hoses to bring or how long a shift must last. They will have data.

In the end, the sight of a clean, towel dried dog reunited with its owner in a shelter is more than a comforting image. It represents foresight, planning, and respect for the bond that ties people to their animals. Disaster response is often measured in lives saved and injuries treated. Thanks to this research, it can also be measured in gallons of water delivered, minutes accounted for, and contamination safely removed from a family pet.