RI, MA EHS Pest Control Blog

We were called by a long time commercial client to rat and mouse proof an area leading into a basement crawl space that had been active with rodents. EHS has been providing Exclusion and Pest Proofing for almost 30 years. We set the standard for non chemical removal and exclusion.

A local cat was already playing cat and mouse (or Rat) with the inhabitants. He was a bit unhappy to loose a prime hunting spot, but since so many rodents inhabit most neighborhoods, we think this feline can remain pretty busy stalking outside of our clients building. Problem solved. We like helping people promptly and it shows.

Johnny Pest

Studies of how rats and ants rescue other members of their species do not prove that animals other than humans have empathy, according to a team led by Oxford University scientists.

Empathy – recognizing and sharing feelings experienced by another individual – is a key human trait and to understand its evolution numerous studies have looked for evidence of it in non-human animals.

The ability to rescue another individual in distress, a typical empathic response of humans, appears in several other animals. Two recent laboratory studies led by US and French researchers looked at how rats and ants will attempt to free individuals of the same species they share a cage or nest with which have been restrained. However, writing in the Royal Society journal Biology Letters, the Oxford-led team argues that such studies are not rigorous enough to separate examples of 'pro-social' behavior, the tendency to behave so as to benefit another individual, from genuine empathy.

'Empathy has been proposed as the motivation behind the sort of ‘pro-social' rescue behavior in which one individual tries to free another,' said Professor Alex Kacelnik of Oxford University's Department of Zoology, lead author of the article, 'however, the reproductive benefits of this kind of behavior are relatively well understood as, in nature, they are helping individuals to which they are likely to be genetically related or whose survival is otherwise beneficial to the actor.

'To prove empathy any experiment must show an individual understands another's feelings and is driven by the psychological goal of improving another's wellbeing. Our view is that, so far, there is no proof of this outside of humans.'

The team highlights how interpretations of pro-social behavior vary – rat rescues, for instance, are regarded as being motivated by empathy whilst ant rescues are not – even though the observed behavior (pulling on the legs or tail of the trapped individual, followed by biting at the restraint) are very similar.

In order to prove empathy any experiment would need to show that individuals changed their response if the circumstances changed; for instance moving away from a trapped individual if that reduced the trapped animal's distress. It would also need to disentangle empathy from acting simply to stop the trapped animal's stress signals – something that can be psychologically selfish and does not need to involve empathy.

Solving the riddle of empathy would have important implications not just for the sciences but for philosophy and ethics. However, the team concludes scientists will have to come up with new, more rigorous studies to show that empathy exists outside of humans.

George Williams,
General Manager - Staff Entomologist

Pest Control, RI, Pest Control, MA

Rats Eat Wiring Of $1 Million Dollar Cath Lab Machine

The digital subtraction angiography (DSA) catheterisation laboratory machine, commonly called the cath lab machine, is a sophisticated piece of equipment worth Rs. 6.5 crore. It can perform angioplasty and angiography procedures, and is a specimen of how much medical science has advanced.

At Jagjivan Ram hospital in Mumbai Central, this high-tech scientific innovation -- reportedly the first such machine in the western region and the second in the country -- has been allowed to become rat food.

Lying at the facility since July 2011, the machine, which hasn't been used even once, has fallen prey to rodents that have nibbled its wiring, hospital sources said.

George Williams,
General Manager - Staff Entomologist

Pest Control, RI, Pest Control, MA 

Rodent Nest Blamed for Small Fire at University Campus

Rodents are blamed for spreading disease and stealing food and now for causing a small fire on the Dalhousie University campus Wednesday morning.

Firefighters were called to the Macdonald building on Alumni Crescent after flames broke out while workers were using heat guns to remove paint from the outside of the building along the roof line.

The guns don’t use open flame, but the heat was enough to ignite straw and grass used in a small rodent nest in the crevices of the woodwork.

The workers used a garden hose to quell the flames, fire department spokesman Dave Meldrum said. Firefighters checked for any extension of the flames and found some charred wood.

Officials at Dal checked the building for other nests, but didn’t find any, and aren’t sure what type of animal built the nest.

Source = Associated Press

George Williams,
General Manager - Staff Entomologist

Pest Control, RI, Pest Control, MA 

Giant Rat Found Inside Of A Foot Locker Store

Yesterday someone Tweeted this photo of a giant monster rat, supposedly discovered at a Foot Locker in the Bronx. You might recognize this guy, as he bears a striking resemblance to the 3-foot-long beast that was stabbed with a pitchfork in Brooklyn last year. That one was believed to be a Gambian pouched rat, and may have been someone's escaped pet. However, it wasn't the first one spotted in that area, and locals believed they were multiplying faster than Gremlins taking a bath.

With this spotting in the Bronx, we think it's safe to say this superbreed of mutant rat is priming for a takeover of the five boroughs (everyone grab some Mountain Dew). Was there anything in that Mayan prophecy about rodents?

George Williams,
General Manager - Staff Entomologist

Pest Control, RI, Pest Control, MA 

Rats Nibble at Paralyzed Patient in Government Hospital

An elderly paralyzed man, who was on ventilator support, has been seriously injured after allegedly being nibbled at by rats at a government hospital.

The 70-year-old man was found seriously injured yesterday morning by his family members at the Mathura Das Mathur hospital with his ears, lips, nose bitten allegedly by rats. However, hospital authorities have not confirmed that the man was injured in rat attack. It was brought to our notice by a patient's attendant.

George Williams,
General Manager - Staff Entomologist

Pest Control, RI, Pest Control, MA 

Rats Given 20 Beers in Two Hours, But Recovered Their Balance in 15 Minutes

A chemical from an ancient herbal remedy makes rats almost immune to the effects of alcohol. Rats who've consumed the drug can consume vast quantities of alcohol without passing out, show few signs of a hangover - and don't become alcoholics, even after weeks of solid drinking, say researchers. The chemical is extracted from an ancient Asian remedy - a seed first used as a hangover cure in the year 659. Rats respond to alcohol in a very similar way to humans. The UCLA researchers now aim to find out if the compound will work in humans.

The Asian seeds - from the tree Hovenia Dulcis - was first used as a hangover cure in the year 659, according to Science Daily. The researchers began their study by looking at herbal compounds that supposedly had 'anti alcohol' effects. They rapidly homed in on the Asian seed. They tested one ingredient - called DHM or dihydromyricetin in the rats.

The rats were given the equivalent of 15 to 20 bottled beers in two hours. Most animals passed out, and remained motionless when flipped over. When given DHM, the rats could 'handle' their drink better. They took longer to get drunk, and seemed to sober up in about 15 minutes. The compound seemed to help rats dealing with hangover anxiety, too. Rats recovering from a binge seemed to perk up when given the compound. Perhaps most importantly for medical professionals, the chemical seems to stop rats wanting to drink. Although rats on DHM can drink more, they don't. 'When you drink alcohol with DHM, you never become addicted,' says the lead researcher, Jing Liang in research published in Journal of Neuroscience. The drug appears to work by blocking a brain receptor. Other promising anti-alcohol drugs have targeted the same receptor - but also caused seizures.

George Williams,
General Manager - Staff Entomologist

Pest Control, RI, Pest Control, MA 

Allston Man Charged With Firing Rifle at Rats in Apartment Hallway

A 57-year-old Allston man faced charges today for allegedly firing an unlicensed rifle at rats in the halls of his Franklin Street apartment building because of frustration over an infestation of the vermin, according to the Suffolk County District Attorney's office.

William McAbee was arraigned in Brighton District Court for unlawful possession of a firearm, unlawful possession of ammunition, and unlawfully discharging a firearm within 500 feet of a dwelling, prosecutors said. A not guilty plea was automatically entered on his behalf, and Judge Kenneth V. Desmond set his bail at $2,500, district attorney spokesman Jake Wark said.

Source – Boston.com

George Williams,
General Manager - Staff Entomologist

Pest Control, RI, Pest Control, MA 

Rats: Holiday Spirit, in Rodent Form

During the holidays, if kids become brats, you can shout with a straight face, “Start acting like rats!’’ According to a study in the journal Science, University of Chicago researchers discovered that lab rats can show empathy — a quality not previously demonstrated in rodents — at levels that are rare even in primates.

Free rats sensed distress in caged rats and worked tirelessly to free them. When chocolate chips were added to the experiment, the free rat did not selfishly gobble them up and let the caged rat languish. It still freed the other rat and shared the sweets. Researchers hope their observations will inform studies of human empathy. Despite the rat’s image as the first creature to abandon a sinking ship, the new finding may inspire a rising tide of concern for one’s fellow beings, especially during the holidays. If even rats put others first, surely humans can, too.

Source = Bostonglobe.com

George Williams,
General Manager - Staff Entomologist

Pest Control, RI, Pest Control, MA 

Research Uncovers Empathy in Rats

As charges of greed and self-interest fly in these hyper-partisan political times, humans might do well to look to rats for lessons in kindness and caring.

A University of Chicago experiment to determine how much empathy rats have for each other had some surprising results, which were published Friday in the research journal Science.

In laboratory studies, a rat was restrained in a small cage that could be opened only from the outside. A second rat, seeing the predicament of the trapped rat, immediately began tirelessly trying to find a way to free his fellow rat.

Eventually, the second rat taught itself to open the cage door, freeing the restrained rat, leading to what strongly resembled a triumphal celebration between the two. Even when faced with an alternative choice of chocolate chips, the free rat would not be deterred from helping its caged fellow rat.

As simple as it sounds, the experiment is being hailed as a new paradigm that will help scientists trace the development of emotion in mammals back through the evolutionary tree.

Previously, scientists thought that empathy and pro-social behavior to help others were unique to humans, said Jeffrey Mogil, a researcher at McGill University in Canada who has done similar studies on mice.

“This study shows the roots of human empathy didn’t just appear but evolved,” said Mogil, who was not connected with the University of Chicago study. “It is very impressive, showing really robust and conclusive evidence that rats show pro-social (helping) behavior. You can argue why the rats are doing it, but you can’t argue anymore that the rats are doing it.”

The experiment is the work of University of Chicago doctoral student Inbal Ben-Ami Bartal; her adviser, Jean Decety, a professor of psychology and psychiatry who studies human empathy; and Peggy Mason, a neurobiology professor who studies pain modulation and relief.

Decety said it has been proved in past studies that rats also experience a primitive form of empathy called emotional contagion — the sort of thing where if one baby in a group of babies begins to cry, they all break out in tears.

“Ben-Ami came to my lab to do her Ph.D. with an idea of using an animal model to study higher forms of empathy,” said Decety, who enlisted Mason for a study that wound up taking three years.

The team first paired rats of the same gender for three weeks.

Then they placed one of the pair in a small, Plexiglas restraint cage, locked by a door that could only be opened from the outside. The cage was placed in a larger enclosure where the rat’s partner roamed free.

By means the researchers aren’t sure of, the caged rat seemed to communicate its distress to the freed rat, and the freed rat sprang into action.

“The free rat jumps on the restraining cage immediately, pushing it, biting at it, touching its nose and whiskers through the openings in the restraining cage with those of the trapped rat,” Mason said. “Clearly it wants to help out the trapped rat.”

After about six days, the free rat would accidentally open the door and from then on quickly learned how to deliberately open it, and then excitedly interact with its now-free partner as they raced around the enclosure.

“I can’t say that they are celebrating,” said Mason. “But sure looks like a celebration.”

Because rats love chocolate, in some experiments the scientists placed two restraint cages in an enclosure with a rat that already knew how to open the cage door. One cage contained a rat, the other five chocolate chips.

“We wanted to ask how much the free rat valued being able to liberate the caged rat,” Mason said. “They like their chocolate chips, but the free rat would open both cages in no particular order.

“The free (rat) could have done all manner of things to monopolize the chocolate chips, but on average it always left one and a half chocolate chips for the liberated rat. That’s impressive — a hard thing for primates to do — showing it puts equal value on chocolate and freeing its partner.”

Eventually rats that did not know each other were used, and the free rat still worked hard to liberate the stranger from the cage.

George Williams,
General Manager - Staff Entomologist

Pest Control, RI, Pest Control, MA