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Shell-Guard RTU

Borate-Glycol Wood Preservative

As you look for ways to protect your investment in a home, cabin, deck, barn or other wooden structure, look no further than Shell-Guard RTU ( Ready-To-Use) borate-based wood preservative. Shell-Guard RTU protects wood from its natural enemies: insects, fungi, mold and moisture. Like Shell-Guard Concentrate, Shell-Guard RTU is colorless, odorless, has a very low level of toxicity to people and pets and is just as effective for preventing wood decay and insect damage to interior and exterior wood members. Shell-Guard RTU is labeled for the control of termites, wood boring beetles, carpenter ants and wood decay fungi.

Since it is ready-to-use, you can pour it right out of the container into your sprayer without the fuss of measuring, mixing and stirring.

Besides its convenience, other advantages to Shell-Guard RTU include its stability and relatively quick drying time. Your logs will be ready to stain within one to three days after a Shell-Guard RTU application.

An application of Shell-Guard RTU is permanent as long as the wood remains protected with Lifeline stains.

(Shell-Guard RTU is not available in California or Canada)

Shell Guard RTU Available Sizes

Shell Guard RTU Available Sizes

Shell-Guard RTU is available in 1 gallon, 2.5 gallon and 5 gallon pails.

Shell-Guard RTU Product Information

Product Information

Shell-Guard RTU provides the ultimate protection against insects and wood rot for your log home.


  • A Preventative or Remedial Treatment
  • No Measuring or Mixing
  • Deep Penetrating
  • EPA Registered
  • Quick Drying Time

Resource Links

Preservatives FAQ

Our preservative products - Shell-Guard, Armor-Guard, and Cobra Rods - protect logs from certain insects that cause wood damage. Read more here.

Preservatives Reviews