Milky Spore Vs Grubex Grub Control

Both Milky Spore and GrubEx are effective at controlling grubs, but they have different advantages and disadvantages. If you are looking for a non-toxic, long-term solution to grub problems, then milky spore is a good option. However, if you need immediate relief from grub problems, then GrubEx is a better choice.

Milky Spore Vs Grubex  Table

Milky Spore


Made In The USA

Grub Killer For Lawns

10 oz Can Treat 2,500 sq ft Area

Treats Up To 10,000 Sq. Ft., 28.7 Lb

Does Not Harm Beneficial Insects

Apply To A Dry Lawn And Water In Thoroughly To Activate

Kills The Grub Stage Of The Japanese Beetle

It Helps To Prevent Root Damage Caused By Insects

It May Last Up To 20 Years

Provides Protection For 4 Months

Use One Teaspoonful Or Powder Every 4 Feet In Your Lawn

Apply During Spring Or Early Summer

It has Natural Bacteria Which Eats The Grub From The Inside

Kills 25 Percent More Grub Types Vs Original Grubex

It Kill Japanese Beetle, June Beetle And Other Lawn Grubs

Kills White Grubs, Sod Webworms, Larvae Of Japanese Beetles & More

Milky Spore
Milky Spore is a natural remedy that works through a bacteria called Bacillus popilliae. This bacteria specifically targets the larvae of the Japanese beetle. Once ingested by the grub, the bacteria multiply inside the grub, eventually causing its death

Over time, the bacteria released by the dead grub spread into the soil, infecting other grubs and thus expanding the protection against further infestations.

The advantages of Milky Spore include:

  • It’s an environmentally friendly solution, being a natural and organic remedy.
  • It doesn’t harm beneficial insects, pets, or humans.
  • It has a long-lasting effect; once established, it can continue to control grubs for many years.

The downsides are:

  • It is slow-acting. It can take two to three years to fully establish in your soil and offer peak grub control.
  • It primarily targets Japanese beetle grubs and may not be effective against other types of grubs.

Grubex (Scotts GrubEx)
Grubex is a chemical grub control product. It contains the active ingredient chlorantraniliprole, which is a pesticide that targets a broad range of lawn grubs, not just Japanese beetles. Once ingested by the grubs, it disrupts their feeding, causing them to starve to death.

The advantages of Grubex include:

  • It has a broad spectrum of effectiveness, covering many types of grubs, not just Japanese beetles.
  • It works relatively quickly and can prevent damage within the same season of application.

The downsides are:

  • Being a chemical pesticide, it can have potential environmental impacts, including possible effects on non-target insects and aquatic life if it runs off into waterways.
  • It has a limited duration of effectiveness, usually needing to be reapplied annually.
  • While considered safe when used properly, there are potential health risks if mishandled.

Both Milky Spore and Grubex can be effective solutions for grub control, but your choice between the two should be based on your specific needs, your local grub species, your time frame, and your comfort level with using chemical pesticides. Always read and follow the product label instructions to use these products effectively and safely.

Our Observation
Choosing between Milky Spore and Grubex largely depends on your personal preferences and specific circumstances. Here are some factors to consider:

  • Milky Spore specifically targets Japanese beetle grubs, while Grubex controls a broader range of grub species. If you’re dealing with Japanese beetle grubs and prefer a natural solution, Milky Spore might be your choice. But if you’re dealing with different types of grubs or a mix, Grubex would be more effective.
  • Grubex works more quickly, usually within the same season it’s applied, while Milky Spore can take two to three years to fully establish in your soil. If you need immediate results, Grubex might be a better choice.
  • Although slower to establish, Milky Spore can provide control for many years, while Grubex typically needs to be reapplied annually. If you’re looking for a more long-term solution and are willing to wait for it to take effect, Milky Spore could be the way to go.
  • Milky Spore is an organic product that won’t harm beneficial insects, pets, or humans, while Grubex is a chemical pesticide that could potentially impact non-target organisms and the environment. If you’re looking for an environmentally friendly solution, Milky Spore would be your choice.
  • Cost may also be a factor. Typically, Milky Spore can be more expensive upfront, but considering its long-term effectiveness, it might be more cost-effective in the long run. Grubex tends to be cheaper, but it needs to be reapplied each year.

In the end, there isn’t a definitive answer because it largely depends on your specific situation. Before making a decision, it could be beneficial to talk to a local extension service or lawn care professional to understand more about the types of grubs in your area and the best solutions for them.

Related Article

Scroll to Top