Anyone used Assault?

Discussion in 'Predators and Pests' started by 2DogsFarm, Mar 31, 2011.

  1. 2DogsFarm

    2DogsFarm Chillin' With My Peeps

    Apr 10, 2009
    NW Indiana
  2. LeezyBeezy

    LeezyBeezy Chillin' With My Peeps

    Mar 13, 2010
    Lancaster PA
    Last edited: Mar 31, 2011
  3. SteveP

    SteveP Out Of The Brooder

    Sep 2, 2010
    Saint Joseph MO
    Here is what I found on the subject..... looks to me that there can be some secondary poisoning as stated in this article but it appears not to lethal (although not very good for a pet either).


    Bromethalin was developed and released in 1985 to combat a world-wide problem of rodent resistance to warfarin-like anticoagulant rodenticides.Bromethalin is not an anticoagulant but is a highly potent rodenticide that provides a lethal dose to rodents in a single feeding. Death occurs within 24 to 36 hours after ingestion. It is a pale, odorless, crystalline solid compound in the diphenylamine family. Its mechanism of action is to uncouple oxidativephosphorylation in the mitochondria of the central nervous system. This leads to a decreased production of ATP. Low levels of ATP inhibit the activity of the Na/K ATPase and lead to a subsequent buildup of cerebral spinal fluid and vacuolization of myelin. The increased CSF results in high intracranial pressure, causing damage to nerve axons, inhibiting neural transmission and leading to paralysis, convulsions and death.

    The LDso of pure bromethalin for dogs is 4.7 ing/kg body weight and 1.8 mg/kg for cats. Minimum lethal doses of bait are 25 g/kg in the dog and 4.5 g/kg in the cat. A typical package contains 21 grams of 0.01% bromethalin. Thus, a five kg dog would have to consume five to six packages to reach toxic levels and a five kg cat would have to consume one to two packages to reach toxic levels. Signs of a sub-lethal dose include hind limb ataxia, depression, extensor rigidity, opisthotonus, lateral recumbency and vomiting. High doses may bring about severe muscle fasiculations, hind limb hyper-reflexia, seizures, hyperthennia, depression and death.

    There are no antemortem tests available, although through clinical signs, a history of exposure, irregular electroencephalographic measurements and cerebral edema (fundic exam) may lead to an antemortem diagnosis. There is no specific antidote for bromethalin poisoning. Therefore, prevention of absorption is of the utmost importance. Treatment is most successful in dogs and cats when emesis is induced and activated charcoal with a saline cathartic are given immediately after ingestion. Treatments with osmotic diuretics and steroids have been utilized but are not as successful as removal of the toxin from the gastrointestinal tract.

    The gross lesions seen on post-mortem examination are limited to those caused by cerebral edema which include narrowing of suici and flattening of gyri. Mild pulmonary congestion may be seen in some cases. The predominant histological change is seen in the brain. There is diffuse spongiform degeneration of the white matter and vacuolization of myelin such as occurs in the optic nerve. There can be microgliosis of the cerebellum and cerebrum.

    Bromethalin or its metabolitedesmethy-bromethalin can be detected in liver, fat, kidney, and brain. Samples should be submitted frozen and kept in the dark (wrap in aluminum foil). Bromethalintoxicosis must be considered as a potential differential diagnosis for neurologic Syndromes and may resemble toxicity from lead, strychnine and organophosphate compounds. Bromethalintoxicosis must also be differentiated from syndromes producing seizures, such as epilepsy and paralytic syndromes, such as trauma, larval migration and neoplasia.

    - by Paul Klausen, Class of 1997

    - edited by Stephen Hooser, DVM, PhD
  4. 2DogsFarm

    2DogsFarm Chillin' With My Peeps

    Apr 10, 2009
    NW Indiana
    Thanks BYCers for doing that research for me.

    Just the fact that there is no antidote & the symptoms of secondary poisoning {shudder} are enough to stop me trying it anywhere near my coop.

    The rats are getting bold enough to pop out when I feed the hens their morning treat of oatmeal w/scrambled egg & yogurt.
    I usually put out a 2nd small dish for the "babies" (6mo hen & cockerel) and twice now have had a smallish rat come out, grab a piece from this dish & dash back under cover.

    Since the young rooster now makes it his job to oversee everyone else eating, and his "sister" eats with the Big Girls I can just ditch dish #2
    I am NOT putting out a Rodent buffet >: (

    My handyman is quoting me for putting a layer of hardware cloth under the pavers that form the coop's flooring (thanks again to BYC for that idea) - hopefully it won't be too pricy & should help keep the uninvited out.
  5. Kansaseq

    Kansaseq Prairie Wolf Farm Asylum

    Feb 12, 2009
    NE Kansas
    I would stick with the anticoagulant type rodenticides. If any of your pets were to get into it, you have a much better chance of saving them.
  6. Talihofarms

    Talihofarms Chillin' With My Peeps

    Dec 4, 2010
    Call the local Boy Scout troop.

    They have eager marksmen with BB and Pellet guns ready to help you out.

    I don't have rats here, but my son and his Boy Scouts come every spring to get rid of the starlings.

    Good luck

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