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TSP Substitute Phosphate-Free Exterior Cleaner 16 -oz Heavy Duty Powder All-Purpose Cleaner

Ratings & Reviews for M-1 TSP Substitute Phosphate-Free Exterior Cleaner 16 -oz Heavy Duty Powder All-Purpose Cleaner

4.5
138
Review
 4.5 out of 5
138 Reviews


87% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this cleaner for its powerful degreasing and surface-prep capabilities, particularly before painting. Most highlight its effectiveness in removing stubborn grime, smoke residue, and grease from walls, ceilings, doors, cabinets, and decks, with paint adhering better after use. Many report exceptional performance on diverse surfaces including pool filters and garage floors. Reviewers appreciate its odorless nature and long shelf life. While some prefer the original formula and a few note the need for gloves, the vast majority consider it an essential tool for preparation and cleaning.

Customer review summary generated by AI, including incentivized reviews.
138 Customer Reviews

Easy to use

Would Recommend

Works as described

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package large and goes a long way

Would Recommend

Cleans well for prep for painting

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Works Great

Would Recommend

At normal mixture, took the smoke stains off the doors easily.

January 7, 2026
Verified Purchaser
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Amazing TSP

Would Recommend

My dad always used Tri Sodium Phosphate to clean windows and I learned that using this mild detergent on other surfaces really gets them clean. When the water starts to turn dirty all I had to do is make a new batch. It only takes about 1 tablespoon to a gallon of warm water to clean these tough dirty surfaces.

December 23, 2025
Verified Purchaser
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NOT the old TSP but it worked...

Would Recommend

Worked to remove old wallpaper paste.

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Excellent Exterior Paint Prep Product

Would Recommend

Effective in removing grime and oxidization, easy of use. and dissolves quickly.

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Stain recommendation

Would Recommend

I got a great recommendation from the paint section employee for stain and a great degreaser for furniture. It resulted in finishing an armoire for my wife and I owe it all to the paint representative!

December 13, 2025
Verified Purchaser
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Worked well to clean shed doors

Would Recommend

Needed to clean shed doors in preparation for painting. Used as directed and removed a couple years of dirt and grime

December 1, 2025
Verified Purchaser
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Great degreaser for cleaning blinds and oily stuff

Would Recommend

It’s great for cleaning blinds and other hard surfaces.

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Phosphate Free when you need TSP

Would Not Recommend

TSP are three letters that mean Tri Sodium Phosphate. This product contains Zero phosphate and therefore cannot be of a sufficient pH base necessary for any application requiring Tri Sodium Phosphate. Bought this to ready or prepping existing tiles for placing new tile over them. Useless product whose label is severely misleading.

November 3, 2025
Verified Purchaser
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Use gloves when using TSP

Would Recommend

TSP is a great household cleaner for small or large clean-up

October 24, 2025
Verified Purchaser
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Versatile, effective, inexpensive

Would Recommend

Inexpensive great cleaning product used for various dirty and greasy jobs. I used on inside walls for paint prep and to clean grime on gutters of a 50 year old house. Odorless, easy to adjust strength, long shelf life. I used this product per easy to understand package directions and precautions (wear gloves, don’t let splatter, rinse thoroughly, etc). Walls were appropriately prepped for paint to adhere nicely. Gutters look newer and improved curb appeal. I’m happy with product and would recom...

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