Sentences with phrase «pyrethroid insecticides»

Regarding Ried Nelson's entry — the combination of pyrethroid insecticides and associated chemical adjuvants like piperonyl butoxide are not entirely harmless, especially to beneficial insects, children, aquatic organisms and cats.

The bank funds could be used for expensive pyrethroid insecticides, but none could be used for DDT.

Investigators have found that H. azteca collected from sites influenced by agricultural / urban runoff are as much as 2 - times less sensitive to pyrethroid insecticides than lab - grown H. azteca.

The experiments have shown that mosquitoes collected locally are resistant to almost all pyrethroid insecticides except one, Deltamethrin, which is not registered for mosquito control in California.

These nets have contributed to the prevention of millions of deaths due to malaria, but in recent years, there has been growing concern that mosquitoes are becoming resistant to the pyrethroid insecticides used on the nets, making them less effective.

In the new study, 5,046 urine samples collected from U.S. adults and children between 1999 and 2002 were tested for five metabolites of pyrethroid insecticides.

As mosquitoes develop resistance to pyrethroid insecticides, researchers are forced to look for alternatives

«We were just very lucky with the pyrethroid insecticides in the»70s and»80s,» Hamon says.

To evaluate the efficacy of indoor residual spraying against malaria, scientists place a piece of tape on the wall, pull it off, and then soak it in a chemical solution to see how much pyrethroid insecticide was applied.

The best choice is one that has been pretreated with pyrethroid insecticide.

Not exact matches

Any insecticide used in a bed net «has to be safe enough that a child can put it in their mouth,» says Ranson, and only pyrethroids fit the bill.

Some countries have switched from pyrethroids to an organophosphate insecticide called actellic.

The world still relies on the same class of insecticides, known as pyrethroids, as it did in 1977.

Like pyrethroids, fipronil is far less toxic to birds and mammals than other insecticides, but can still kill small aquatic life.

Also, an insecticide called fipronil has partially replaced pyrethroids for controlling termite and ant infestations in some areas.

Bedbugs have become a big problem in U.S. hotels and homes over the past decade, in part because they are resistant to a widely used class of insecticides called pyrethroids.

They have also shown that this gene makes insects resistant to pyrethroids raising the concern that GSTe2 gene could protect mosquitoes against the major insecticides used in public health.

Researchers from LSTM have found that a single genetic mutation causes resistance to DDT and pyrethroids (an insecticide class used in mosquito nets).

The proof that this particular enzyme is also a marker for resistance to pyrethroids, gives us a further opportunity to monitor the rate of insecticide resistance and make evidence based decisions in line with national plans.»

We show that field - collected Ugandan Culex quinquefasciatus display CNV for the voltage-gated sodium channel gene (Vgsc), target - site of pyrethroid and organochlorine insecticides.

Clusters were randomly allocated to receive either long - lasting insecticidal nets (LLINs) alone or LLINs in combination with indoor residual spraying (IRS) with a pyrethroid (deltamethrin) insecticide in the first year and a carbamate (bendiocarb) insecticide in the two subsequent years.

Methodology / principal findings: Population genetic structure was assessed through microsatellite analysis, and the impact of insecticide pressure by genotyping two target - site mutations, Vgsc - 1014F of the voltage-gated sodium channel target of pyrethroid and DDT insecticides, and Ace1 - 119S of the acetylcholinesterase gene, target of carbamate and organophosphate insecticides.

We conclude that studies of pyrethroid efficacy should not discount mosquitoes that survive insecticide exposure with fewer than six legs, as they may still be capable of biting humans, reproducing, and contributing to malaria transmission.

Pyrethrins and their synthetic derivative, pyrethroids, are commonly found in squeeze - on topical flea / tick treatments, household insecticide sprays, flea shampoos, and flea collars.

The biggest concern comes with the application of canine spot - on pyrethrin / pyrethroid - based insecticides to cats.

Concentrated pyrethroid or pyrethrin - based insecticides cause neurological stimulation in cats as evidenced by muscle twitches, tremors, and seizures.

Those products that contain insecticides from the pyrethrin or pyrethroid family are the culprit (e.g, permethrin, cyphenothrin, etc.).

Permethrin belongs to the class of insecticides known as pyrethroids and as such its mechanism of action is similar to all members of the group.

The active ingredient is Deltamethrin, an insecticide belonging to the pyrethroid family.

Pyrethroids are the man - made versions of pyrethrins, natural insecticides from chrysanthemum flower.

Chrysanthemum contain pyrethroids, namely permethrin, which is a natural insecticide.

Deltamethrin, a synthetic pyrethroid, is one of the safest insecticides out there with minimal effects on both humans and pets.

Pyrethrins, and the related but more potent, chemically derived pyrethroids, are widely - used insecticides in flea and tick prevention products used around homes and on cats and dogs.

Cats that have been exposed to a large amount of pyrethrin / pyrethroid - based insecticides will often have whole - body tremors.

This could also be a concern if you hire a pest control service, which may use a pyrethrin / pyrethroid - based insecticide in and around your home.

Cats are extremely sensitive to certain insecticides, including pyrethrin and pyrethroid, so it is essential that canine products with these ingredients aren't used on our feline friends.

Flea control products containing this insecticide (natural pyrethrins, synthetic pyrethroids, allethrin, resmethrin, and permethrin) are labeled «non-toxic.»

These are two pyrethroids, a class of synthetic insecticides based on a botanical compound found in Chrysanthemum flowers (pyrethrum).

Besides pyrethroid - based products, ingredients to be wary of are organophosphate insecticides (OPs) and carbamates, both of which are found in various flea and tick products.

Some of the more common insecticides used to treat pediculosis include lime - sulfur, pyrethrins and pyrethroids.