Scotts Turf Builder Triple Action - Weed Killer, Crabgrass Preventer

In this review the Scotts Turf Builder Triple Action is evaluated as an all-in-one lawn care option for homeowners who want to kill broadleaf weeds, prevent crabgrass and feed their turf with a single application. The biggest reason to consider it is convenience: one 11.31 lb. bag treats up to 4,000 sq. ft. and combines three tasks that would otherwise require separate products. It works best when applied with a Scotts spreader to a wet lawn in spring while dandelions are actively growing, and the package directs watering after 24 hours to lock in crabgrass prevention.

Key Features

• Three-in-one formula: Kills listed broadleaf weeds, prevents crabgrass for up to four months, and feeds the grass to promote thicker, greener turf.
• Broad weed control: Controls dandelion, clover, dollarweed, ground ivy, chickweed, plantain, henbit, and english daisy for cleaner-looking lawns.
• Crabgrass prevention: Prevents crabgrass and other annual grassy weeds like barnyardgrass and foxtail when applied correctly before germination.
• Wide grass compatibility: Labeled for common turf types including Kentucky Bluegrass, Perennial Ryegrass, Tall Fescue, Bermudagrass, and Zoysiagrass for flexible use across many lawns.
• Easy application: Designed for use with a Scotts spreader and requires watering in after 24 hours to activate the preemergent benefit.

Who It's For

Homeowners with medium to large lawns who want a single product that addresses weed control, crabgrass prevention and feeding at once will find this convenient. It suits yards where the listed turf types are present and where spring timing can be observed so applications happen when dandelions are actively growing and soil conditions favor preemergent activity.

This product is less appropriate for lawns already infested with mature crabgrass since it will not kill existing crabgrass, or for users who need a spot treatment for a few isolated weeds. Also note availability restrictions if you are located outside the listed shipping regions.

Pros & Cons

Pros

• Combines weed control, crabgrass prevention and fertilizer in one application for time savings.
• Formulation feeds the lawn and can produce a noticeably greener, healthier turf when effective.
• Works across a wide range of common grass types for flexible use.

Cons

• Mixed customer reports on weed control effectiveness mean results can vary by lawn and timing.
• Does not kill existing crabgrass, only prevents future germination.

Specifications

Our Verdict

Scotts Turf Builder Triple Action is a practical choice for gardeners wanting a combined weed control, preemergent and fertilizer product that simplifies spring lawn care. While crabgrass prevention and feeding are definite strengths, weed control results can vary, so those with heavy existing weed problems may need targeted follow-up. Overall it offers good value for multi-task lawn maintenance when used at the recommended timing.

Frequently Asked Questions

Will this kill existing crabgrass?
No. The product prevents crabgrass germination for up to four months but does not control established crabgrass plants.

When should I apply it?
Apply in spring when dandelions are actively growing and the lawn is wet from dew or watering so particles stick to weed leaves, then water after 24 hours to activate the preemergent.

Which grass types can I use it on?
It is labeled for many common turf grasses including Kentucky Bluegrass, Perennial Ryegrass, Tall Fescue, Bermudagrass, Fine Fescue, Bahiagrass, Centipedegrass and Zoysiagrass.