Painters and contractors searching for TPS cleaner are usually after TSP — trisodium phosphate — the heavy-duty alkaline cleaner that’s been the gold standard for pre-paint wall washing since the 1930s. TSP cuts through grease, nicotine yellowing, mildew, smoke residue, and old soap scum that surface cleaners like Pine-Sol and Mr. Clean leave behind. The catch is that phosphate-based cleaners are banned for residential use in 17 states under clean water regulations because they contribute to algae blooms in lakes and streams. Modern phosphate-free substitutes (Savogran TSP-PF, Krud Kutter Original, Simple Green Pro HD) match the cleaning power without the environmental restrictions, and they ship to all 50 states.
What Real TSP Does and Why It’s Restricted
Trisodium phosphate (chemical formula Na3PO4) is a high-pH alkaline cleaner (pH 12.5 in solution). It chemically saponifies oils and greases, breaks the molecular bonds of dried paint and varnish, and kills mildew on contact. A 1-cup-per-gallon mixed solution removes 30 years of cooking grease from kitchen ceilings in one pass.
The phosphate component flows through residential wastewater into rivers and lakes, where it fertilizes algae blooms that suffocate aquatic life. The EPA tightened residential restrictions in 1994, and California, Oregon, Washington, and the Great Lakes states banned phosphate cleaners entirely for residential consumer sale. Commercial users with permitted wastewater disposal can still buy original TSP.
Phosphate-Free Substitutes That Actually Match TSP
Savogran TSP-PF (10501) uses sodium metasilicate as the active alkaline agent. It hits a pH of 12 in solution and removes paint chalk, nicotine staining, and kitchen grease at the same rate as original TSP. Mix 1/4 cup per gallon for general wall washing, 1/2 cup per gallon for heavy degreasing. It costs $9 to $14 per pound and is sold at Home Depot, Ace Hardware, and Sherwin-Williams stores.
Krud Kutter Original Concentrate is biodegradable, water-based, and uses a proprietary surfactant blend. Spray-on application means no scrubbing for most jobs. It’s the better choice for tile, grout, and finished surfaces where dwell time matters. Simple Green Pro HD Heavy Duty Cleaner is the choice for greasy garage floors and outdoor concrete.
Safety Equipment You Cannot Skip
Alkaline cleaners burn skin and damage eyes faster than acidic cleaners. TSP-PF and any high-pH cleaner require neoprene gloves (Honeywell North 6779), splash-rated safety goggles (Uvex Stealth or 3M GoggleGear), and a long-sleeve shirt. The 3M 7501 half-face respirator with P100 cartridges (2097) blocks the fine alkaline mist generated during spray application.
Never mix alkaline cleaners with bleach. The reaction releases chlorine gas at lethal concentrations within 60 seconds in an enclosed space. Never mix with ammonia (Windex, some glass cleaners) for the same reason. If you use bleach for mildew control, rinse the surface thoroughly with water and let it dry 24 hours before applying any alkaline TPS cleaner.
Mixing the Right Solution Strength
Three dilution levels cover most homeowner uses. Light cleaning of painted walls before repainting uses 2 tablespoons per gallon of warm water. Medium-duty cleaning of kitchen walls, range hoods, and bathroom ceilings uses 1/4 cup per gallon. Heavy-duty stripping of old grease, smoke damage, or mildew-rich surfaces uses 1/2 cup per gallon.
Always add cleaner to water, never water to cleaner. The reverse-order mix can splash concentrated alkali into the eyes and face. Use a stainless steel or plastic bucket; galvanized buckets will react with alkaline solutions over time.
Wall Prep Before Painting
The reason TSP and its substitutes dominate pre-paint cleaning is that fresh paint will not bond to a greasy or chalky surface. Wash from the bottom up to prevent streaking, using a synthetic sponge or microfiber cloth. Work in 4×4-foot sections to maintain a wet edge.
Rinse with clean water and a second clean sponge. Two rinses are better than one; any cleaner residue left on the wall will interfere with paint adhesion. Let the wall dry for 24 hours before applying primer. Test for surface readiness by pressing painters tape onto the wall; if it pulls clean without dust or chalk, the wall is ready.
Removing Nicotine and Smoke Damage
Walls and ceilings in former smoking environments hold tar deep in the paint surface. A 1/2-cup-per-gallon Savogran TSP-PF solution applied with a 9-inch synthetic roller and worked with a stiff nylon brush removes 80 to 90 percent of nicotine yellowing in one pass. Heavy buildup requires two cleanings 24 hours apart.
Even after thorough cleaning, prime with a stain-blocking primer like Zinsser B-I-N Shellac-Based Primer or Sherwin-Williams ProBlock Oil. Water-based primers won’t reliably block residual nicotine bleed-through. Skipping the shellac primer is the most common reason fresh paint over former smoke damage develops yellow ghosting within weeks.
Cleaning Decks, Siding, and Concrete
For exterior surfaces, mix Savogran TSP-PF at 1/2 cup per gallon and apply with a garden pump sprayer. Let dwell 5 to 10 minutes (do not let dry on the surface), then scrub with a stiff brush and rinse with a garden hose. For mildew-stained vinyl siding, add 1 cup of household bleach per gallon to the rinse step — never to the TSP solution itself.
Concrete and brick patios benefit from a stronger application: 1 cup per gallon, applied with a pump sprayer, scrubbed with a deck brush on a long pole, and pressure-washed off at 1,500 to 2,500 PSI. Don’t exceed 2,500 PSI on aged concrete; the surface paste will erode.
Storage and Disposal
Store dry TSP-PF powder in the original container in a dry location. Once mixed with water, the solution is good for 3 to 5 days before efficacy drops. Pour unused solution into the toilet, not down the sink, where any residue will more effectively flush to the wastewater treatment plant. Triple-rinse the bucket and sponges with clean water and let them dry completely before storage.
Mark mixed solution containers clearly with date and dilution ratio. Storing unlabeled cleaner solutions in a garage or basement is a leading cause of accidental poisoning calls to Poison Control, especially in homes with kids or pets. Properly used, labeled, and stored, a quality TPS cleaner substitute solves cleaning problems that pull-it-off-the-grocery-shelf products simply cannot touch.
