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RodrepelTM is a chemosensory irritant type of an animal aversive which functions by driving the animal away from the target object instead of killing or harming the animal. It is completely free of insecticides, heavy metals or products such as copper or lead napthenates, lindane etc or chemicals found dangerous or harmful to humans or animals.

Some of the widely used rodenticides include organohalogens based pesticides such as Lindane, Bromethalin etc. and also heavy metal based compounds such as Copper Naphthenate and Lead Naphthenate, Zinc Phosphide etc. The use of such rodenticides is a serious environmental concern as they leach out from the polymer to enter the atmosphere and are later deposited by rain. They get carried into surface water as well as ground water. Being fat-soluble such chemicals tend to accumulate through food chains, as is common with organochlorine rodenticides. This can most obviously affect the aquatic biota and also contaminate the surface water reserves, ultimately affecting even human life which is dependent on these for food and sustenance.

RodrepelTM is completely inert within the polymer matrix apart from executing its primary function of keeping the animal away. Thus it doesn’t leach out to pollute and as a result wouldn’t contaminate the groundwater, surface water reserves and soil.

LD stands for "Lethal Dose". LD50 is the amount of a material, given all at once, which causes the death of 50% (one half) of a group of test animals. From the graph, it can be depicted that the rodenticides currently used have very low LD50 value showing higher toxicity whereas RodrepelTM have a very high LD50 value exhibiting its non toxic nature. Most countries like Finland, Indonesia, Korea, Netherlands, New Zealand, Saint Lucia, Sweden, Australia, Austria, Cyprus, Norway and Sri Lanka have either banned or restricted the use of organohalogen based and other such poisonous rodenticides. A long term or chronic exposure of rodenticides would mean adverse effects on kidney, blood pressure and central venous system of humans.

The harmful rodenticide additives volatilize at polymer processing temperatures and release extremely toxic fumes. These toxic fumes are many times more lethal than the original. Not only does this lead to an extensive loss of chemical during processing; but also poses fatal hazards to workers handling such products at the shop floor. A long term or chronic exposure would mean adverse effects on kidney, blood pressure and central venous system of humans. Carcinogenic and mutagenic disorders have also been reported. Moreover use of these rodenticides in agriculture has led to non-target species which are otherwise quite beneficial being affected.

RodrepelTM has a low vapor pressure which means that it doesn’t volatilize easily thus not resulting in vapors mixing with the atmosphere. It is thermally stable at temperatures as high as 1400oC. The graph below shows the LC50 inhalation of various rodenticides available in the market. LC50 value is the toxicity of the surrounding medium that will kill half of the sample population of a specific test-animal in a specified period through respiration. They have very low LC50 value making them more toxic. These toxic fumes are many times more lethal than the original.

Inhalation of copper dusts and fumes is reported to lead to nasal congestion as also congestion of the upper digestive and perforation of the nasal septum. Moreover most of the formulations based on these metals also contain other so called inert materials which are mostly petroleum based. These petroleum based constituents contain many acutely toxic, chronically toxic and carcinogenic compounds.
RodrepelTM is designed to create aversion effectively and not kill the rodents or any other animal; it doesn’t harm any target or non target species in any way. The graph illustrates the LD50 dermal values of various rodenticides. Chronic exposure to these rodenticides can lead to anemia as also increases the permeability of membranes which can accelerate the uptake of other toxic substances. These rodenticides are also neurotoxic and can affect nerve transmission and damage the central nervous system. Tests submitted to EPA have found that Copper Naphthenate also induces DNA damage.
Chemicals Rats Bees Birds Fish Human Life
Lindane 4 4 4 4 4
Lead Napthenate 3 - 2 2 4
Copper Napthenate 3 2 2 5 4
Zinc Phosphide 5 5 5 4 5
Warfarin 5 2 2 3 5
Bromadiolone 6 2 4 5 5
Brodifacoum 6 - 6 6 5
Bromethalin 5 - 5 5 4
Diphacinone 5 5 3 4 5
*(6) - Extremely Toxic (5) - Highly toxic (4) – Toxic (3) - Slightly Toxic (2) - Practically Non toxic (1) - Relatively Harmless