Grantham Pest Control LLC — licensed pest control company in Houston, Texas

Grantham Pest Control LLC

DBA of GRANTHAM PEST CONTROL LLC

5.0(7 reviews)
Houston, HARRIS County, TX
Verified via TPCL Registry (TDA)(Apr 5, 2026)

About Grantham Pest Control LLC

Grantham Pest Control LLC has been providing licensed pest control services in Houston, Texas since 1998. With 28 years of operation under Texas Department of Agriculture license TPCL #568345, they serve residential and commercial customers across HARRIS County.

Their licensed service areas include pest control, and termite treatment.

Customers have rated Grantham Pest Control LLC 5 out of 5 stars, with 7 reviews reflecting their service track record in Houston.

The designated certified applicator for Grantham Pest Control LLC is DARNELL GRANTHAM. Texas law requires every pest control company to have a certified applicator responsible for supervising all pest management activities.

Pest Control Services in Houston, TX

Licensed for 2 service categories under TPCL #568345

Pests Treated

Based on the licensed service categories above

Location

5330 Griggs Rd # 50, Houston, TX 77021
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Texas Pest Control License

Verified by Texas Department of Agriculture
License #
TPCL #568345
Issued
Renewed
Expires
Certified Applicator
DARNELL GRANTHAM(#32741)

Pest control businesses in Texas are required to hold a Structural Pest Control Business License (TPCL), issued and regulated by the Texas Department of Agriculture (TDA). The information shown here reflects the public TDA licensee record. Last verified: . View on Texas Department of Agriculture

Authorized service categories (2) under this license

P

General Pest Control (Category P)

Category P authorizes the company to perform general structural pest control services. This is the most common license category and covers the identification, treatment, and prevention of common household and commercial pests.

What this license covers:

  • Cockroaches, ants, spiders, silverfish, and crickets
  • Bed bugs, fleas, ticks, and mosquitoes
  • Wasps, hornets, and other stinging insects
  • Scorpions, centipedes, and occasional invaders
  • Interior and exterior perimeter treatments
  • Preventive pest management programs

Why it matters: Category P is the foundation license for most pest control companies. It ensures the company has trained technicians who understand pest biology, proper pesticide application, and safety protocols for treating homes and businesses.

T

Termite Treatment (Category T)

Category T authorizes the company to inspect for, treat, and prevent termite infestations. This is a specialized license requiring additional training in termite biology, soil treatment, and structural assessment.

What this license covers:

  • Subterranean termite treatment (liquid barriers and bait systems)
  • Drywood termite treatment (localized and whole-structure)
  • Formosan termite identification and treatment
  • Pre-construction termite prevention for new buildings
  • Termite inspections and WDI (Wood-Destroying Insect) reports
  • Annual monitoring and warranty programs

Why it matters: Termite treatment requires specialized knowledge of soil chemistry, building construction, and treatment techniques. An incorrect application can fail to protect the structure or cause environmental damage. The T category ensures the company meets TDA standards for termite work.

Frequently Asked Questions

Common questions about pest control services in Houston, TX

Do I need a contract for pest control services?

Not necessarily. Many Texas pest control companies offer both one-time treatments and ongoing service plans. Contracts with quarterly or monthly service often include re-treatment guarantees and lower per-visit costs. Review cancellation terms and satisfaction guarantees before signing.

How long does a pest control treatment take?

A standard interior/exterior treatment takes 30–60 minutes for an average-sized home. Termite inspections take 1–2 hours. Full termite treatments may require a full day. Fumigation involves 2–3 days of preparation, treatment, and aeration. Your technician will provide a time estimate based on your property.

Should I get multiple quotes before choosing a pest control company?

Yes. Getting 2–3 estimates is recommended. Compare not just price but also the scope of service, products used, guarantees offered, and customer reviews. The cheapest option is not always the best — look for licensed, well-reviewed companies that clearly explain their treatment plan.

What are the different pest control license categories in Texas?

The TDA issues licenses with specific category codes: P (General Pest Control), T (Termite Treatment), L (Lawn & Landscape), W (Wildlife Removal), C (Crack & Crevice), S (Structural Fumigation), and D (Waste Disposal). Each category authorizes different types of pest management work.

Can I report a pest control company in Texas?

Yes. Complaints against licensed pest control companies can be filed with the Texas Department of Agriculture. You can report unlicensed operators, unsafe practices, or unsatisfactory service. The TDA investigates complaints and can take enforcement action including fines and license suspension.

What pests does general pest control cover?

General pest control (Category P) covers common household pests including cockroaches, ants, spiders, silverfish, earwigs, crickets, centipedes, and occasional invaders. Some companies include mosquito and flea treatments in their general service, while others offer these as add-ons.

What types of termites are found in Texas?

Texas has three main termite types: Eastern subterranean termites (most common, found statewide), Formosan subterranean termites (aggressive species in Southeast Texas and coastal areas), and drywood termites (found in attics and furniture, mainly in South and Coastal Texas). Each requires different treatment approaches.

How do I deal with fire ants on my property?

The two-step method is most effective: first, broadcast a bait product across your entire yard when ants are actively foraging (mornings or evenings in moderate weather). Then, treat individual mounds directly with a contact insecticide 3–5 days later. Professional treatment is recommended for large properties or persistent infestations.

Are there dangerous spiders in Texas?

Texas has two medically significant spider species: the brown recluse (found statewide, especially in Central Texas) and the black widow (found throughout the state). Brown recluse bites can cause tissue necrosis, while black widow bites can cause muscle pain and systemic symptoms. Most other Texas spiders are harmless.

What pest control challenges are unique to Texas?

Texas faces unique challenges including Formosan termite colonies in the Gulf region, fire ant infestations across most of the state, extreme heat that drives pests indoors, a long warm season that keeps pests active year-round, and a diverse geography ranging from humid coastlines to arid deserts, each with different pest pressures.

What is heat treatment for pests?

Heat treatment involves raising the temperature of an infested area to 130–145°F using industrial heaters. It is the most effective treatment for bed bugs and can also treat drywood termites in localized areas. The high temperature kills all life stages including eggs. No chemicals are used, and rooms can typically be re-occupied the same day.

License Information
License ActiveInsurance Active
TPCL #
568345
SPCB TPCL #
11191
License Type
P — Pest ControlT — Termite Treatment
Issued
Renewed
Expires
Insurance Exp.
Operator
DARNELL GRANTHAM
Applicator
DARNELL GRANTHAM
Applicator Lic.
#32741
Legal Name
GRANTHAM PEST CONTROL LLC

Licensed by the Texas Department of Agriculture. Verify at texasagriculture.gov

Verified CompanyActive
TPCL Registry (TDA)
Last verified: Apr 5, 2026
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