Both can fill wall damage, but they shine in different jobs.

• Spackle (spackling): Handy for small fixes like nail holes and dents. It usually dries faster and sands quickly. Some versions include a dry-time color indicator, which can be helpful for quick touch-ups.
• Drywall joint compound (“mud”): Better for bigger repairs, taping seams, and feathering edges over a wider area. It’s available as ready-mixed for convenience and as setting-type powder for faster set times.

If you’re repairing a few tiny spots, spackle can be a simple choice. For seams or larger patches, joint compound offers more work time and smoother blending. You’ll find lightweight and dust-control options in both ready-mix and powder styles online and in store.

A few tweaks can make patches look cleaner and blend better.

• Applying thick layers: Thick coats can shrink or crack. Multiple thin coats tend to blend more smoothly.
• Skipping tape on seams: Joints often need tape to help prevent cracking.
• Not stirring ready-mix: A quick stir can improve consistency before use.
• Sanding too aggressively: Heavy sanding can create dips. Light, even passes help maintain a flat surface.
• Rushing dry times: Recoating before the layer is dry may cause smearing or peeling.
• Ignoring dust: Choosing dust-control formulas and using gentle sanding can reduce airborne dust.

Working patiently—thin coats, proper dry time, and light sanding—can help the patch blend in. Protective eyewear and ventilation are advisable when sanding.

In everyday use, “drywall mud” is simply another name for drywall joint compound. The real differences are in the types you choose:

• Ready-mixed all-purpose: Convenient and versatile for taping and finishing.
• Lightweight: Easier to spread and sand, suitable for finishing coats.
• Dust-control: Formulated so heavier particles drop more quickly, which may help reduce airborne dust while sanding.
• Setting-type powder: Mixed with water and designed to set in a stated time (for example, around 20, 45, or 90 minutes), useful for deeper fills and faster turnarounds.

Pick a type based on your task—quick fixes, taping seams, or final finishing—and the working time you prefer.

Dry time depends on the formula, coat thickness, and room conditions.

• Ready-mixed compound: Thin coats commonly dry overnight under normal conditions. Thicker applications, cool temperatures, or high humidity can extend that.
• Setting-type powder: Sets chemically according to the product’s stated time (for example, around 20–90 minutes). Sanding and recoating typically happen after it’s firm and dry to the touch.

To check progress, look for a uniform color and a powdery feel when lightly sanded. Fans and gentle airflow can aid evaporation, but avoid force-drying that could cause cracking. Some spackles include a color-change indicator for dry time; joint compound usually does not. Results can vary with conditions, so allow extra time when in doubt.

Both work, but the best pick depends on your project and pace.

• Setting-type powder: Useful for deep fills, patching, or when you want quicker turnaround. It sets on a schedule (e.g., 20–90 minutes), which can reduce waiting between coats.
• Ready-mixed compound: Great for taping seams and finishing larger areas. It offers longer working time for feathering and blending.
• Lightweight and dust-control options: Lightweight can be easier to sand; dust-control formulations may help reduce airborne sanding dust.

For a single room or full install, ready-mix is a convenient go-to. For targeted repairs, setting-type can speed things up. You’ll find sizes from small tubs to large pails online and in store, with pickup and delivery options depending on location.