--- product_id: 172991863 title: "Select Source Triad QC Select - 3-Way Herbicide with Quinclorac (Quart) | Controls Dandelion, Clover, Crabgrass, and Many Other Broadleaf and Grassy Weeds" brand: "select source" price: "AR$170040" currency: ARS in_stock: true reviews_count: 8 category: "Select Source" url: https://www.desertcart.com.ar/products/172991863-select-source-triad-qc-select-3-way-herbicide-with-quinclorac store_origin: AR region: Argentina --- # Safe for athletic fields & diverse turf sites Post-emergent formula targets tough late-season weeds 3 active ingredients for max weed control Select Source Triad QC Select - 3-Way Herbicide with Quinclorac (Quart) | Controls Dandelion, Clover, Crabgrass, and Many Other Broadleaf and Grassy Weeds **Brand:** select source **Price:** AR$170040 **Availability:** ✅ In Stock ## Summary > 🌿 Dominate your lawn game with Triad QC Select — because your turf deserves the triple threat! ## Quick Answers - **What is this?** Select Source Triad QC Select - 3-Way Herbicide with Quinclorac (Quart) | Controls Dandelion, Clover, Crabgrass, and Many Other Broadleaf and Grassy Weeds by select source - **How much does it cost?** AR$170040 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/172991863-select-source-triad-qc-select-3-way-herbicide-with-quinclorac) ## Best For - select source enthusiasts ## Why This Product - Trusted select source brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Crabgrass Crusher:** Targets crabgrass at every growth stage—from fresh sprouts to mature tillers—for total control. - • **Late-Season Powerhouse:** Effectively cleans up weeds missed by spring pre-emergents, ensuring your turf stays pristine year-round. - • **Root & Foliage Absorption:** Quinclorac penetrates both leaves and roots, delivering deep, lasting weed eradication. - • **Triple-Action Weed Defense:** Harnesses 2,4-D, Dicamba & Quinclorac for unbeatable broadleaf and grassy weed elimination. - • **Versatile Turf Compatibility:** Perfect for residential lawns, parks, roadsides, and athletic fields—excluding sensitive golf tees and greens. ## Overview Triad QC Select is a potent post-emergent herbicide combining three active ingredients—2,4-D, Dicamba, and Quinclorac—to effectively control a wide spectrum of broadleaf and grassy weeds including dandelion, clover, and crabgrass. Suitable for use on residential and non-residential lawns, athletic fields, parks, and roadsides, it excels as a late-season treatment to clean up weeds missed by spring applications. Trusted by users for its comprehensive and lasting weed control, this quart-sized liquid formula offers targeted absorption through both foliage and roots, ensuring your turf stays healthy and weed-free. ## Description Triad QC Select provides post-emergent control of a comprehensive list of both grassy and broadleaf weeds. It can be used on residential and non-residential lawns and turf, athletic fields, roadsides, parks, golf turf (except tees, greens and collars). Review: Crabgrass finally dead. - I've tried quite a few things over the years, and this is the only thing that will actually kill all the crab grass safely in Bermuda. Follow the instructions, use surfactant, spot spray, and give it time to work. Results are not at the speed of glyphosate, but trust the process and wait. After a few weeks go again lightly on what you under-sprayed. Review: Crabgrass killer - Great product seems to work well take a long time to take affect and then all of a sudden the crab grass dies ## Features - 3 ACTIVE INGREDIENTS: Combines 3 active ingredients (2,4-D, Dicamba, Quinclorac) to help eliminate hard to control weeds - USE SITES: residential and non-residential lawns and turf, athletic fields, roadsides, parks, golf turf (except tees, greens and collars) - POST-EMERGENT: Perfect late season clean up product for areas that didn’t receive pre-emergent herbicide application in the spring - CRABGRASS CONTROL: Controls newly germinated 1- to 2-leaf crabgrass, to 1-tiller crabgrass and when crabgrass has matured to 5-tillers or greater - BROADLEAF WEED CONTROL: Presence of Quinclorac contributes to control of grassy weeds, is absorbed by the foliage and roots ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07XZN6XLR | | Active Ingredients | 2,4-D, Dicamba, Quinclorac | | Best Sellers Rank | #16,177 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #158 in Weed Killers | | Brand Name | Select Source | | Coverage | Various sites including lawns, athletic fields, roadsides, parks, and golf turf (select areas) | | Customer Reviews | 4.4 4.4 out of 5 stars (198) | | Included Components | 1 bottle | | Item Form | Quart | | Item Weight | 1.18 Kilograms | | Liquid Volume | 32 Fluid Ounces | | Manufacturer | Prime Source, LLC | | Model Number | 51511PSQ121 | | Part Number | 51511PSQ121 | | UPC | 644216047451 | | Unit Count | 32.0 Ounce | ## Product Details - **Active Ingredients:** 2,4-D, Dicamba, Quinclorac - **Brand:** Select Source - **Item Form:** Quart - **Item Weight:** 1.18 Kilograms - **Liquid Volume:** 32 Fluid Ounces ## Images ![Select Source Triad QC Select - 3-Way Herbicide with Quinclorac (Quart) | Controls Dandelion, Clover, Crabgrass, and Many Other Broadleaf and Grassy Weeds - Image 1](https://m.media-amazon.com/images/I/415KnFqDa+L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Crabgrass finally dead. *by P***L on March 2, 2026* I've tried quite a few things over the years, and this is the only thing that will actually kill all the crab grass safely in Bermuda. Follow the instructions, use surfactant, spot spray, and give it time to work. Results are not at the speed of glyphosate, but trust the process and wait. After a few weeks go again lightly on what you under-sprayed. ### ⭐⭐⭐⭐⭐ Crabgrass killer *by W***S on August 2, 2025* Great product seems to work well take a long time to take affect and then all of a sudden the crab grass dies ### ⭐⭐⭐⭐⭐ Best herbicide I've used for mixed weed problems *by B***N on November 1, 2025* This herbicide knocked out the crabgrass and clover that other products couldn't touch. I followed the mixing instructions carefully and applied it with a pump sprayer. Within two weeks, the weeds were dead and my grass looked healthier. The quinclorac formula works well on tough broadleaf weeds too. The smell is fairly strong during application, so pick a calm day to avoid drift. The quart bottle covers a decent area, though it goes faster than I expected on a larger lawn. Overall, it does what it promises and is worth the investment if you have persistent weed problems. ## Frequently Bought Together - Select Source Triad QC Select - 3-Way Herbicide with Quinclorac (Quart) | Controls Dandelion, Clover, Crabgrass, and Many Other Broadleaf and Grassy Weeds - Southern Ag Surfactant for Herbicides Non-Ionic, 16oz, 1 Pint - Liquid Harvest Lazer Blue Concentrated Spray Pattern Indicator 8 Ounces Perfect Weed Dye, Herbicide Fertilizer Marking Turf Mark and Marker --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.ar/products/172991863-select-source-triad-qc-select-3-way-herbicide-with-quinclorac](https://www.desertcart.com.ar/products/172991863-select-source-triad-qc-select-3-way-herbicide-with-quinclorac) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-04-22*