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The Science Behind Streak-Free Windows: What Professionals Do Differently
When it comes to window cleaning, nothing beats the satisfaction of streak-free, crystal-clear glass. But achieving this pristine finish isn’t as simple as grabbing a cloth and some spray. Professional window cleaners have mastered the science behind streak-free windows, using specific techniques and tools to deliver flawless results. Here’s what they do differently and why their methods are so effective.
1. Using the Right Tools for the Job
Professionals don’t rely on standard cleaning products or paper towels to get the job done. Instead, they use high-quality tools specifically designed for window cleaning. Key items in their arsenal include:
- Squeegees: The cornerstone of any professional’s toolkit, squeegees ensure even water removal, leaving no streaks behind. The rubber blades are replaced regularly to maintain their effectiveness.
- Microfiber Cloths: Unlike traditional rags, microfiber cloths are lint-free and highly absorbent, making them perfect for detailing and edge cleaning.
- Specialized Cleaning Solutions: Professionals often use eco-friendly, ammonia-free solutions that dissolve dirt and grease without leaving residues.
- Water-Fed Poles: For high-rise or hard-to-reach windows, water-fed poles equipped with purified water systems are used to clean without streaking.
2. The Importance of Purified Water
One of the secrets to streak-free windows lies in the water itself. Tap water contains minerals, salts, and impurities that can leave behind spots and streaks when it dries. Professionals use purified water systems that remove these contaminants, ensuring a spotless finish.
Purified water also has a natural ability to dissolve dirt and grime more effectively than regular water. When combined with the right tools, it creates the perfect formula for crystal-clear windows.
3. Perfecting the Technique
The way professionals clean windows is just as important as the tools they use. Here are some techniques they employ to achieve streak-free results:
- Pre-Cleaning: Before tackling the glass, professionals remove loose dirt and debris from the surface to prevent scratches.
- Systematic Movements: Using a squeegee, they clean in overlapping strokes, starting at the top and working their way down. This ensures no spots are missed and prevents water from dripping onto already cleaned areas.
- Edge Detailing: Professionals pay special attention to the edges and corners of the glass, where streaks are most likely to form. Microfiber cloths are often used for this step.
- Drying Techniques: Any remaining water is carefully wiped away to prevent streaking. This step is crucial, especially in areas with high humidity.
4. Timing Matters
Professional window cleaners know that timing can make or break the outcome. Cleaning windows on a sunny day might seem like a good idea, but direct sunlight causes cleaning solutions to dry too quickly, leaving streaks behind. Professionals prefer overcast days or cooler parts of the day to ensure optimal results.
5. Safety First
For high-rise buildings or windows in hard-to-reach places, safety is a top priority. Professionals use specialized equipment like harnesses, ladders, and scaffolding to ensure they can clean effectively without compromising safety. This expertise allows them to tackle challenging jobs while maintaining streak-free quality.
6. Experience and Training
What truly sets professionals apart is their experience. Years of practice have honed their skills, allowing them to identify and address potential issues, like hard water stains or stubborn grime, before they become a problem. Their training ensures they can adapt to different types of glass and environments, delivering consistent results every time.
A Trusted Name in Toronto
When it comes to achieving streak-free windows, Toronto Window Cleaners has perfected the art. With over 20 years of experience, their team of fully trained and certified professionals uses advanced techniques and tools to deliver exceptional results. Whether it’s a residential property or a high-rise building, they’ve built a reputation for excellence across the Greater Toronto Area.
In conclusion, the science behind streak-free windows is a blend of using the right tools, employing expert techniques, and understanding the conditions that impact cleaning results. By trusting professionals, you’re not just ensuring sparkling windows—you’re investing in a methodical process that guarantees perfection every time.
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‘The Art of the Yiddish Monologue’ and other mini-courses in Yiddish
במשך פֿונעם חודש יאַנואַר 2026 וועט ייִוואָ פֿירן די ווײַטערדיקע מיני־קורסן אויף ייִדיש:
• „די קונסט פֿונעם ייִדישן מאָנאָלאָג“, וווּ מע וועט לייענען און אַרומרעדן מאָנאָלאָגן פֿון שלום עליכם, י. לץ פּרץ, דער טונקעלער, ב. קאָוונער, משה נאַדיר, רחל ברכות און יצחק באַשעוויס. מע וועט אויל אַרומרעדן די געשיכטע פֿונעם מאָנאָלאָג אין ייִדישן טעאַטער (שיין בייקער)
• שעפֿעריש שרײַבן, וווּ מע וועט אויפֿן סמך פֿון ליטעראַטור־מוסטערן באַטראַכטן די וויכטיקע באַשטאַנדטיילן פֿון פּראָזע — שפּראַך, סטיל, דיאַלאָג, געשטאַלט און פּייסאַזש (באָריס סאַנדלער)
• יצחק־לייבוש פּרץ און זײַנע באַציִונגען מיט די נײַ־געבוירענע ייִדישע סאָציאַליסטישע קרײַזן אין משך פֿון די 1890ער יאָרן (עדי מהלאל)
• די גרויסע אַקטריסע אסתּר רחל קאַמינסקאַ, וווּ די סטודענטן וועלן לייענען אירע זכרונות אויף ייִדיש (מיכל יאַשינסקי)
• די לידער פֿון דוד האָפֿשטײן, וואָס איז מערקווירדיק צוליב זײַן צונױפֿפֿלעכט פֿון דײַטשישע, רוסישע און אוקראַיִנישע ליטעראַרישע טראַדיציעס מיט תּנכישע און מאָדערנע ייִדישע השפּעות (יודזשין אָרנשטיין)
• די ייִוואָ־גדולים אין זייערע אייגענע ווערטער, וווּ מע וועט לייענען די שריפֿטן פֿון א. טשעריקאָװער, מ. װײַנרײַך, י. לעשטשינסקי, י. מאַרק, ש. ניגער, נ. פּרילוצקי, ז. קלמנאָװיטש, ז. רייזען, י. שאַצקי און נ. שטיף (דוד בראַון)
The post ‘The Art of the Yiddish Monologue’ and other mini-courses in Yiddish appeared first on The Forward.
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Suspect at Large in Brown University Shooting that Killed at Least Two, Injured Eight
Police vehicles stand near the site of a mass shooting reported by authorities at Brown University in Providence, Rhode Island, U.S., December 13, 2025. Photo: REUTERS/Taylor Coester
Police in Rhode Island were searching for a suspect in a shooting at Brown University in Providence in which two people died and eight were critically wounded at the Ivy League school, officials said.
Providence Mayor Brett Smiley told a news conference that police were still searching for the shooter, who struck at Brown’s Barus & Holley engineering building, where exams were taking place at the time. Officials said police were looking for a male dressed in black and were scouring local video cameras in the area for footage to get a better description of the suspect.
Smiley said officials could not yet disclose details about the victims, including whether they were students. He lamented the shooting.
“We are a week and a half away from Christmas. And two people died today and another eight are in the hospital,” he said. “So please pray for those families.”
Brown is on College Hill in Providence, Rhode Island‘s state capital. The university has hundreds of buildings, including lecture halls, laboratories and dormitories.
President Donald Trump told reporters at the White House that he had been briefed on the situation, which he called “terrible.”
“All we can do right now is pray for the victims and for those that were very badly hurt.”
Compared to many countries, mass shootings in schools, workplaces, and places of worship are more common in the US, which has some of the most permissive gun laws in the developed world. The Gun Violence Archive, which defines mass shootings as any incident in which four or more victims have been shot, has counted 389 of them this year in the US.
Last year the US had more than 500 mass shootings, according to the archive.
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Rights Groups Condemn Re-Arrest of Nobel Laureate Mohammadi in Iran
Taghi Ramahi, husband of Narges Mohammadi, a jailed Iranian women’s rights advocate, who won the 2023 Nobel Peace Prize, poses with an undated photo of himself and his wife, during an interview at his home in Paris, France, October 6, 2023. Photo: REUTERS/Christian Hartmann
International human rights groups have condemned the re-arrest of Nobel Peace Prize laureate Narges Mohammadi in Iran, with the Nobel committee calling on Iranian authorities to immediately clarify her whereabouts.
Mohammadi’s French lawyer, Chirine Ardakani, said on X that the human rights activist was arrested on Friday after denouncing the suspicious death of lawyer Khosrow Alikordi at his memorial ceremony in the northeastern city of Mashhad.
Mashhad prosecutor Hasan Hematifar told reporters on Saturday that Mohammadi was among 39 people arrested after the ceremony.
Hematifar said she and Alikordi’s brother had made provocative remarks at the event and encouraged those present “to chant ‘norm‑breaking’ slogans” and disturb the peace, the semi-official Tasnim news agency reported.
The prosecutor said Mashhad’s chief of police and another officer received knife wounds when trying to manage the scene.
CALLS FOR RELEASE
The Norwegian Nobel Committee called on Iranian authorities “to immediately clarify Mohammadi’s whereabouts, ensure her safety and integrity, and to release her without conditions.”
The European Union also called for Mohammadi’s release. “The EU urges Iranian authorities to release Ms Mohammadi, taking also into account her fragile health condition, as well as all those unjustly arrested in the exercise of their freedom of expression,” an EU spokesperson said on Saturday.
A video purportedly showing Mohammadi, 53, without the mandatory veil, standing on a car with a microphone and chanting “Long Live Iran” in front of a crowd, has gone viral on social media.
Ardakani said Mohammadi was beaten before her arrest.
Reporters Without Borders said four journalists and other participants were also arrested at the memorial for human rights lawyer Alikordi, who was found dead in his office on December 5.
Authorities gave the cause of his death as a heart attack, but rights groups have called for an investigation into his death.
The US-based Human Rights Activists News Agency said the crowd also chanted “death to the dictator,” a reference to Supreme Leader Ayatollah Ali Khamenei, as well as: “We fight, we die, we accept no humiliation.”
Mohammadi, who received the 2023 Nobel Peace Prize, has spent more than 10 years of her life in prison, most recently from November 2021 when she was charged with “propaganda against the state,” “acting against national security,” and membership of “illegal organizations.”
This year’s Nobel Peace Prize winner, the Venezuelan opposition leader Maria Corina Machado, said on Saturday that the opposition’s campaign in Venezuela was akin to that taking place in Iran.
“In Oslo this week, the world honored the power of conscience. I said to the ‘citizens of the world’ that our struggle is a long march toward freedom. That march is not Venezuelan alone. It is Iranian, it is universal,” she said on X on Saturday.