3Disinfectant / Cleaners Never mix with acid cleanersAllow 10 minutes dwell time (wet) for 100% rated germ killApply; let stand; wipe clean; dryClean while applying with cloth; re-wipe to apply; allow to air dry
4Read The MSDSYou’ll learn some useful, general product use principles, like:Sodium Metasilicate based products may etch glass and may damage aluminum at temperatures over 120ºButyl based spray & wipe cleaners may damage a white board’s surfaceDon’t mix disinfectant cleaners and acid cleanersUse aerosol graffiti removers with adequate ventilation
6Soil Types Loose, dry soils Oily, sticky soils Sand, dust and other dry particles – work dry soils with dry processesMineral depositspH - alkalineOily, sticky soilsGreases & oilsFood & drinkRubber streakspH - acidic
7Detergency ProcessesThe chemical processes by which cleaning agents remove soil from surfacesInvolves a combination of chemical actions, including wetting action, emulsifying action, dispersing action and adsorption actionKnowing how products react with soils and surfaces allows you to select a product that fits the situation and perform your tasks efficiently without damaging the buildings in your care
8Wetting ActionWetting action “makes water wetter” by reducing its surface tension
9Emulsifying ActionEmulsification keeps oil and dirt separate; and the oil in suspension
10Dispersing ActionDispersion keeps dirt particles from re-clumping and re-depositing
11Adsorption ActionAdsorption causes dirt to cling to cleaning agents until it can be wiped away
12Basic Methods of Cleaning Direct Mechanical ActionCleanser and a green pad, scraper, etc.90% of a Maintenance & Operations budget is laborDirect Mechanical Action is 100% labor – scraping off soils“Elbow Grease” (Direct Mechanical Action) is your most expensive “cleaning product”
13Basic Methods of Cleaning Chemical ActionSoils are electro-chemically bonded to the surface. We must break that bond to remove the soilsCleaning “happens” at Neutral (pH = 7)
14Cleaning with Chemistry pH and the pH scale“pH” refers to the ratio of positively and negatively charged hydrogen ions in a substance
15Increasing Alkalinity Extraction CleanerHand Soap210 million timesstronger than water714610x54318910111213Oily, Sticky – Organic SoilsDry, Loose – Mineral SoilsIncreasing AcidityNeutral CleanerWindow CleanerSpray & Wipe CleanersDegreasersFloor StrippersCaustic Soda (Lye)Hydrochloric AcidDescalerRust RemoverVinegarBoric AcidNeutralPureWaterCSPCreme CleanDisinfectant CleanersNutra-RinseIncreasing AlkalinitypH Scale
16Cleaning With Chemistry Identify the relative pH of the soilApply a product with the opposite pHThis brings the pH of the soil closer to NeutralEver hear of the word “Neutralize”? This is where it comes fromWhen the pH of the soil gets close to Neutral, you can wipe it offAllow the product some time for the chemistry to work
17T.A.C.T. Principle In order for products to work, they need: Time to work; dwell time, time to penetrate and loosen soilsAgitation to mix the soil and solution, put it in solution so it may be removedConcentration; it must be at the correct dilution; too much wastes product, leaves streaks and residues which attract soil so the surface gets dirty faster and you have to clean more frequently; too little will require more effort (labor / time)Temperature – most products are formulated for use in cold water – using hot water may cause streaking or cause the product to rise into the air with the steam rather than be applied to the surface where it is needed.
18Cleaning With Chemistry Use Acidic Products on Alkaline Soils; Use Alkaline Products on Acidic SoilsRemember: Relatively Acidic or Relatively AlkalineSo: Acid on mineral deposits & Alkaline Cleaners (Spray & Wipe Cleaners) on food spills
19pH BalanceUsing cleaners with the same relative pH as the soil is not the most efficient way to clean – it relies on direct mechanical action.
20How “Strong” Is That Product? Remember, each step away from 7 on the pH scale is 10 times stronger than the one before.The “Strength” of a product refers to how far away it’s pH is from Neutral – the farther away from Neutral, the Stronger the product
21Cleaning With Chemistry Disinfectant Cleaners are generally Neutral Cleaners that also kill germsWhat are Neutral Cleaners good for?Either type of soilNeutral cleaners won’t damage floor finishes
22Cleaning With Chemistry So:Identify the pH of the soilSelect a product with the opposite pHNow, consider the surface
23Finest First Rule Do No Harm to building surfaces Begin cleaning an unknown soil by using the least aggressive product with the least aggressive toolIf it doesn’t work, don’t jump straight to a powdered cleanser and a green pad, move up gradually
24Cleaning Smartly Cleaning Begins With Dirt! Identify the Soil TypeWhich Suggests The Product TypeThen Consider The Surface TypeWhich Suggests The Tool To UseWhich Suggests The Method To UseWe’ve Looked At Products and Soils…
25Surfaces Surfaces may be damaged chemically or mechanically Floor finishesWoodPainted surfacesFabricsEven hard surfaces can be scratched
26Hand Tools By Level of Aggressiveness – Low to High Lamb’s Wool Duster Soft Brooms & BrushesCleaning Cloths & WipersFiber, Nylon BrushesHand & Floor Pads – The Lighter The Color, The Softer The Pad (More or Less)Grit BrushesWire BrushesScrapers
28Cleaning Methods “Dry” cleaning Vacuum Sweep Dust with duster Remove dry soils with dry processesVacuumSweepDust with dusterDust with cloth (treated or untreated)Dust mop (treated or untreated)Scrape
29Cleaning Methods Wet cleaning Wiping& washing Spray & wipe cleaning Spray product, wipe clean with clothPail & cloth cleaningWring cloth, wipe surfaceMop bucketDamp mopping – wrung almost dry, no drippingWet mopping – wrung half-way, dripsFlood mopping – no wringing, “slosh” it on the floor
30Cleaning Methods Wet Cleaning (cont.) Scrubbing Wet Surface, Use Hand Pad Or Brush To Loosen Soil, Wipe Clean and Dry With ClothStrippingUsing A Solvent To Chemically Loosen Soils/Finishes Before ScrubbingScrapingWet Surface, Scrape Soil, Wipe With Cloth/Mop
31Cleaning Process Descriptions Process descriptions begin with soil & the surface, add the product & application method, introduce the tool and state the cleaning method…“To clean a dried soda spill from a laminated table top, apply a liberal amount of general purpose cleaner with a trigger sprayer, allow to stand 5 minutes. Using a white hand pad, scrub the spot until soil is loosened. Wipe clean with an absorbent cloth. Re-spray area lightly and wipe dry with a clean soft cloth.”
32Cleaning Task Descriptions Task descriptions are briefer, and assume a level of understanding“Spot-clean tables with spray & wipe cleaner.” – Describes removing the same soda spill from the same tabletop
33So, How Do I Clean That? Mineral Deposits on chrome faucets? Cleanser and a green pad, right?Consider the surface…Heavy-Duty Spray & Wipe Cleaner? Its strong.Wrong pH; Mineral deposits are an alkaline soil.Hydrochloric Acid based Bowl Cleaner?Wrong acid type – will still damage the surface.O.K., Phosphoric based Acid Cleaner!Right. Correct pH, correct ingredient base. Which Tool?Green Pad?Will scratch the surfaceWhite Pad or Cloth!
34So, How Do I Clean That?A leaking drinking fountain in a carpeted hallway left mineral deposits on the carpet…Mineral Deposits; I’ll use an Acid Cleaner!Bowl Cleaner + Carpet = HoleAre there any acidic cleaners that are mild enough to use on carpeting?Nutra-Rinse from Hillyard
35So, How Do I Clean That?When encountering an unknown, make reasonable assumptions based upon sound cleaning principles.“It feels sticky (its pH is probably acidic – so I’ll use an alkaline or neutral cleaner). Its on a finished vinyl floor (I’ll definitely use a neutral cleaner, with a soft tool so I won’t damage the finish), so I’ll leave some extra solution on it to soak and soften the soil while I mop the rest of the floor, and then come back and pick it up.”
36Sound Principles Never Mix Products. T.A.C.T. When in doubt about the pH of a soil, use a neutral cleaner - Finest-first – Do No Harm to the surfaceWork Dry Soils With Dry Processes
37Quiz The Two Types of Soils Discussed were and . Product Selection is determined by the of the soil; and the(T/F) The pH scale measures how much active ingredient is in the product.(T/F) Abrasive Cleaners clean primarily by Mechanical Action.
38Quiz Wetting Action uses water softeners to make water “ ”. Adsorption attracts the to the until it can be wiped away.(T/F) Deciding how to clean something is often a process of elimination.Remove Dry Soils with
39QuizAfter identifying a soil type and selecting a product, consider the , which helps select the , which indicates the cleaning to use.The pH of a product should be relatively a) opposite; b) the same as the pH of the soil you’re trying to remove
40AnswersThe Two Types of Soils Discussed were Dry Loose Soils and Oily Sticky Soils .Product Selection is determined by the pH of the soil; and the Surface .(F) The pH scale measures how much active ingredient is in the product.(T) Abrasive Cleaners clean primarily by Mechanical Action.
41Answers Wetting Action uses water softeners to make water “wetter”. Absorption attracts the dirt to the Cleaning Agent (Product) until it can be wiped away.(T) Deciding how to clean something is often a process of elimination.
42AnswersAfter identifying a soil type and selecting a product, consider the surface , which helps select the tool , which indicates the cleaning method to use.The pH of a product should be relatively a) opposite as the pH of the soil you’re trying to remove
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