Sun Joe Pressure Washer Detergents – Selection & Usage Guide Sun Joe® Pressure Washer Detergent Selection Guide ☀️ Sun Joe® Product Guide Pressure Washer Detergent Selection Guide . 6 Formulas CoveredConcentratedBiodegradableBleach-FreeSPX Series Compatible The Right Detergent Makes All the Difference. All Sun Joe® pressure washer detergents are concentrated, biodegradable, non-toxic, and bleach-free — safe for outdoor use without harming vegetation or the environment. Each formula is pressure-washer rated and engineered to pair with the full Sun Joe® SPX Series. This guide covers six core detergents — including three Snow Foam Auto Wash scent variants — their differences, ideal use cases, and tips for getting the best results with your pressure washer. ✓ Concentrated✓ Biodegradable✓ Non-Toxic✓ Bleach-Free✓ Safe Near Vegetation✓ Pressure-Washer Rated Quick Comparison at a Glance Product SKU Best Use Strength Compatible Surfaces House + Deck Cleaner SPX-HDC1G Siding, decks, fences Medium Vinyl, wood, brick, concrete Heavy-Duty Cleaner / Degreaser SPX-APC1G Grease, oil, rust, mildew Heavy-Duty Wood, brick, metal, concrete Boat Wash SPX-APBW1G Boats, marine surfaces Medium Fiberglass, wood, metal 3-Pack Concentrate Trio SPX-ASST3Q Home + auto + general Varied Multi-surface, painted Snow Foam — Pineapple SPX-FCS1G Vehicle exterior wash Gentle Paint, clear coat, glass, chrome Snow Foam — Coconut SPX-FCS1G-COC Vehicle exterior wash Gentle Paint, clear coat, glass, chrome Snow Foam — Orange-Vanilla SPX-FCS1G-CRM Vehicle exterior wash Gentle Paint, clear coat, glass, chrome Product Details — Outdoor & Surface Cleaners 🏠 House + Deck All-Purpose Concentrated Cleaner SPX-HDC1G | 1 Gallon Best For Removing mildew, oxidation, and surface dirt from siding Cleaning and brightening weathered wood decks and fences Prepping surfaces for painting, staining, or sealing Brick and concrete driveways and walkways Outdoor furniture and patio surfaces Compatible Surfaces Vinyl & aluminum siding Wood decks & fences Brick & concrete Painted surfaces Pro Tip For wood decks, apply in sections with the 25° nozzle and work in the direction of the grain. Rinse before the detergent dries to prevent streaking. ⚡ Heavy-Duty Cleaner + Degreaser SPX-APC1G | 1 Gallon Best For Oil and grease stains on driveways and garage floors Rust and mildew on wood, brick, and metal surfaces Heavy caked-on mud on equipment and vehicles Industrial-grade outdoor surface degreasing ★ Bob Vila's Best Overall Pressure Washer Soap 2023 Compatible Surfaces Wood & brick Metal & concrete Driveways & garage floors Pro Tip Apply with the black soap nozzle and let the formula dwell for 2–3 minutes on oil or grease stains. Follow up with the 15° nozzle for a deeper rinse. ⚓ All-Purpose Boat Wash SPX-APBW1G | 1 Gallon Best For Fiberglass hull cleaning and oxidation removal Wooden boat trim and marine wood surfaces Metal cleats, rails, and fittings Boat trailers and marine equipment End-of-season hull cleaning Compatible Surfaces Fiberglass & aluminum Marine wood Metal fittings Pro Tip For oxidation on fiberglass, apply generously and let sit 3–5 minutes. Use the SPX-RB1 Rotary Wash Brush attachment to scrub and lift buildup before rinsing. 🎁 3-Pack Pressure Washer Concentrate Trio SPX-ASST3Q | 3 × 1 Quart What's Included House + Deck Wash (1 qt) Snow Foam Auto Wash (1 qt) All-Purpose Heavy-Duty Cleaner (1 qt) Best For Homeowners who need versatile multi-task detergents Sampling all three formulas before buying gallons Gifting — covers home, vehicle, and heavy-duty cleaning Compatible Surfaces Vinyl, wood, concrete Painted surfaces Vehicle exteriors Pro Tip Use the Auto Foam bottle with your foam cannon for car washes — it creates thick cling foam that lifts dirt without scratching paint. Great for a full driveway detail session using all three in sequence. Premium Snow Foam Car Wash Soap 💡All three Snow Foam variants share the same high-viscosity, fast-foaming formula — gentle on paintwork, tough on road grime. The only difference is the scent. Each is pressure-washer rated, biodegradable, bleach-free, and available in a 1-gallon bottle. For maximum foaming and cling, use with the SPX-FC34 Foam Cannon. What All Snow Foam Variants Do Fast-foaming, high-viscosity formula clings to vertical surfaces Captures and gently lifts dirt without scratching paint or clear coat Leaves a brilliant, streak-free shine after rinsing Compatible with all Sun Joe® SPX Series pressure washers Can also be applied with a soft wash mitt or microfiber cloth Compatible surfaces: paint, glass, chrome, plastic cladding, wheels & rims Scent Variants — Same Formula, Different Fragrance 🍍 Pineapple The Original The original Snow Foam scent — bright, tropical, and refreshing. A customer favorite for weekend car-wash sessions. SPX-FCS1G Pro Tip Apply bottom-up with the foam cannon. Let the thick foam dwell 2–3 minutes before rinsing top-down with the 40° nozzle. 🥥 Coconut Clean & Smooth A smooth, clean coconut scent for a relaxing wash experience. Identical formula — safe on all exterior surfaces. SPX-FCS1G-COC Pro Tip Great for RVs and larger vehicles. Work in sections and keep foam wet — rinse each section before moving to the next. 🍊 Orange-Vanilla NEW — Sweet & Fresh The refreshing orange + vanilla ice cream scent. Same proven snow foam formula in a crowd-pleasing new fragrance. SPX-FCS1G-CRM Pro Tip For a showroom finish, follow the foam rinse with a microfiber towel dry immediately after rinsing to prevent water spots. 💡Agent Tip: Recommend Snow Foam based on customer scent preference only — cleaning performance is identical across all three variants. All are biodegradable, non-toxic, and bleach-free. 🌊 Snow Foam 3-Pack Trio SPX-AW3Q | 3 × 1 Quart One quart each of Pineapple, Coconut, and Orange-Vanilla Snow Foam. Ideal for customers who want to try all three scents before committing to a full gallon, or those who like to rotate scents. Same formula, three fragrances — all in one purchase. Which Detergent Is Right for You? If you need to… Recommend This Clean siding, decks, fences, or prep for painting House + Deck CleanerSPX-HDC1G Remove oil stains, grease, rust, or heavy mildew Heavy-Duty Cleaner + DegreaserSPX-APC1G Clean a boat, fiberglass hull, or marine equipment Boat WashSPX-APBW1G Handle home + car + general cleaning in one purchase 3-Pack TrioSPX-ASST3Q Wash a car without scratching paint — Pineapple scent Snow Foam PineappleSPX-FCS1G Wash a car without scratching paint — Coconut scent Snow Foam CoconutSPX-FCS1G-COC Wash a car without scratching paint — Orange-Vanilla Snow Foam Orange-VanillaSPX-FCS1G-CRM Try all three Snow Foam scents in smaller quantities Snow Foam TrioSPX-AW3Q Universal Dilution Guide Standard Cleaning 1:10 1 part detergent to 10 parts water. Use for routine cleaning tasks. Heavy / Deep Cleaning 1:5 1 part detergent to 5 parts water. Use for stubborn stains and heavy degreasing. 🚫Always dilute before use. Never add undiluted concentrate directly to your pressure washer's detergent tank or foam cannon. Undiluted detergent can damage pump seals and cause clogging in the detergent system. ⚠️Do not store diluted solution in the detergent tank between uses. Always flush the tank with clean water after each session to prevent residue buildup and pump damage. How to Use Detergent — Step by Step Step 1 — Choose the right nozzle Always apply detergent using the black soap nozzle (low-pressure) or your foam cannon attachment (SPX-FC34). Never apply detergent through a high-pressure nozzle (0° or 15°) — this causes uneven application and may damage surfaces. Step 2 — Dilute your concentrate Mix at the standard 1:10 ratio (1 part detergent, 10 parts water). For stubborn stains or heavy degreasing, use a 1:5 ratio. Never add undiluted concentrate directly to your detergent tank. Step 3 — Fill the detergent tank or foam cannon Pour your diluted solution into the onboard detergent tank on your SPX model, or fill the SPX-FC34 Foam Cannon directly. The foam cannon is ideal for cars, boats, and any surface that benefits from thick foam cling and extended dwell time. Step 4 — Apply with the soap nozzle or foam cannon Work from the bottom up on vertical surfaces to prevent streaking. Keep the nozzle 12–18 inches from the surface. Allow the detergent to dwell for 1–3 minutes before rinsing. Do not let it dry on the surface. Step 5 — Rinse thoroughly from the top down Switch to the 25° or 40° nozzle and rinse from top to bottom. Overlap passes by a few inches to avoid missed spots. For vehicles, dry immediately with a clean microfiber towel to prevent water spots. Pro Tips for Best Results Tip Details Avoid direct sunlight Heat causes detergent to dry on surfaces before it can work. Clean in the shade or during cooler parts of the day for streak-free results. Protect nearby plants Even biodegradable formulas can stress plants in high concentrations. Lightly water surrounding vegetation before and after cleaning. Use the foam cannon for vehicles The SPX-FC34 creates thick snow foam that clings longer, giving detergent more time to lift dirt without scrubbing. Essential for a scratch-free car wash. Flush the detergent tank after use Run clean water through the tank and soap line after each session to prevent residue buildup and clogging in the detergent system. Work in sections Apply and rinse one section at a time, especially on large surfaces. This prevents detergent from drying before you can rinse it. Store concentrates properly Keep bottles sealed and away from freezing temperatures. Do not store diluted solution in the detergent tank between uses. Troubleshooting Guide 🟡 Streaking on Surface Possible Cause Detergent dried too fast before rinsing Solution Clean in the shade or during cooler hours Work in smaller sections and rinse sooner Apply bottom-up, rinse top-down 🟡 Low or No Foam Possible Cause Incorrect dilution ratio Foam cannon not set correctly Solution Adjust ratio — try 1:5 for more foam Check foam cannon adjustment dial Ensure soap nozzle or foam cannon is attached (not a pressure nozzle) 🟡 Poor Cleaning Results Possible Cause Wrong detergent for the task Dilution too weak Solution Use the decision guide above to select the correct formula Increase concentration to 1:5 for heavy stains Extend dwell time to 2–3 minutes before rinsing 🟡 Residue Buildup in Tank Possible Cause Detergent tank not flushed after use Solution Fill tank with clean water and run through the soap line to flush Always flush after every detergent session Never leave diluted solution in the tank between uses 🔴 Surface Damage / Etching Possible Cause High-pressure nozzle used for detergent application Wrong formula on incompatible surface Solution Always use the black soap nozzle or foam cannon for applying detergent Verify the detergent is compatible with the surface — consult the guide above Do not use Heavy-Duty Degreaser on painted or clear-coated vehicle surfaces 🟡 Detergent Won't Dispense Possible Cause Clogged detergent line from residue buildup Using a pressure nozzle instead of soap nozzle Solution Switch to the black soap nozzle — detergent only draws at low pressure Flush the detergent line with clean water to clear blockage Check for kinks or blockages in the detergent feed tube Frequently Asked Questions Can I use any nozzle to apply detergent? No. Always apply detergent using the black soap nozzle (low-pressure) or your foam cannon attachment. Never apply through a 0° or 15° high-pressure nozzle — this delivers too much pressure for proper detergent application and can damage surfaces. Detergent also only draws from the tank or foam cannon when using a low-pressure nozzle. Can I use detergent undiluted? No. All Sun Joe® concentrates must be diluted before use. Use a 1:10 ratio (1 part detergent to 10 parts water) for standard cleaning, or 1:5 for heavy-duty degreasing. Adding undiluted concentrate directly to the detergent tank can damage pump seals, clog the detergent line, and may not clean as effectively as properly diluted solution. What's the difference between the three Snow Foam scent variants? Only the fragrance. Pineapple (SPX-FCS1G), Coconut (SPX-FCS1G-COC), and Orange-Vanilla (SPX-FCS1G-CRM) all use the exact same high-viscosity snow foam formula. Cleaning performance, foam quality, surface compatibility, and safety profile are identical. Choose based entirely on personal scent preference. How long should I let detergent dwell before rinsing? Allow detergent to dwell for 1–3 minutes on standard surfaces. For heavy grease, oil stains, or rust (using the Heavy-Duty Degreaser), extend dwell time to 2–3 minutes. For marine applications with the Boat Wash, 3–5 minutes is recommended on oxidized fiberglass. Never allow detergent to dry on the surface — work in sections if needed. Is it safe to use near plants and grass? Yes — all Sun Joe® detergents are biodegradable and non-toxic. However, even eco-friendly detergents can stress vegetation when applied at high concentrations. As a precaution, lightly water surrounding plants and grass before cleaning and rinse them again after you're done. Avoid allowing large volumes of runoff to pool around plant roots. Can I use the Heavy-Duty Degreaser on my car? No. The Heavy-Duty Cleaner + Degreaser (SPX-APC1G) is formulated for tough exterior surfaces like concrete, brick, metal, and wood — not for vehicle paint or clear coat. For car washing, always use the Snow Foam Auto Wash (any scent variant) with a foam cannon for a safe, scratch-free clean that won't damage paint, clear coat, or trim. Do I need a foam cannon to use Snow Foam? No — Snow Foam can be applied through the onboard detergent tank with the black soap nozzle, or even applied by hand with a soft wash mitt. However, for best results — thick foam cling, extended dwell time, and full-vehicle coverage in seconds — the SPX-FC34 Foam Cannon is strongly recommended. The foam cannon aerates the detergent and projects it up to 15 ft, delivering a rich foam blanket that lifts dirt without contact. How do I flush the detergent tank after use? After each cleaning session with detergent, fill the onboard detergent tank with clean water and run it through the soap line until the water runs clear. This removes any remaining detergent residue that could build up and clog the detergent system over time. Never leave diluted solution sitting in the tank between sessions. Which detergent is best for heavy rust and mildew? The Heavy-Duty Cleaner + Degreaser (SPX-APC1G) is the right choice. Apply with the black soap nozzle, allow 2–3 minutes of dwell time, then rinse with the 15° nozzle for a deeper, more penetrating rinse. For light surface mildew on siding or fencing, the House + Deck Cleaner (SPX-HDC1G) is also effective. What is the recommended accessory for Snow Foam? The Sun Joe® SPX-FC34 Foam Cannon is the ideal pairing for all Snow Foam variants. It aerates the detergent solution to create thick, high-viscosity foam that clings to vertical surfaces for 2–3 minutes of effective dwell time — lifting dirt without mechanical scrubbing. It attaches via standard 1/4-inch quick-connect and is compatible with all Sun Joe® SPX Series pressure washers. Where can I get support? Visit shopjoe.com for product support, chat assistance, and to order any Sun Joe® detergent. You can also reach the Snow Joe® + Sun Joe® customer service team by phone at (866) 225-9723. Always consult your specific pressure washer model's manual for instructions on detergent tank capacity and soap nozzle compatibility. Related articles Pressure Washer Troubleshooting Find Your Snow Joe / Sun Joe User Manual (All Models) Can I use any detergent with my SPX160E-MAX pressure washer? Sun Joe High-Pressure Washer Hose Compatibility Guide How do I assemble my SPX3001?