- Why the 22 Domains Matter
- Exam Format and Registration Facts
- Domains 1-5: Certification, Law, and Registration
- Domains 6-9: Environment, Safety, and First Aid
- Domains 10-14: IPM, Pests, and Products
- Domains 15-19: Mixing, Equipment, and Weather
- Domains 20-22: Disposal, Storage, and Records
- Mapping the Domains to a Study Schedule
- After You Pass: Recertification
- FAQ
- The Agricultural General Standards exam has 100 questions across 22 content domains, with 70% needed to pass.
- You need a TDA eligibility letter and account number before Metro Institute will let you schedule a seat.
- Each attempt costs $64, separate from the $200 commercial applicator license fee paid to TDA.
- Scores stay valid for 12 months, so plan your category exam scheduling around that window.
Why the 22 Domains Matter
The Texas Commercial Pesticide Applicator General Exam isn't organized around vague "topics" - it's built from 22 distinct content domains that map almost line-for-line to the Texas A&M AgriLife General manual (AES-5073) and the Laws and Regulations manual (AES-5056). If you're preparing for the closed-book, 100-question, 2-hour exam administered through Metro Institute on behalf of the Texas Department of Agriculture, understanding how these 22 domains fit together is the fastest path to hitting the 70% passing score.
This guide breaks down every domain, what it actually tests, and how the pieces connect so you're not memorizing isolated facts. For a broader walkthrough of preparation strategy, pair this with our TX-PEST Study Guide, and if you're still weighing whether the credential fits your career, see our ROI analysis.
Exam Format and Registration Facts
Before diving into content, it helps to know exactly what you're walking into. The exam is closed-book, computer-based, and proctored in person at Metro Institute testing locations. You get 100 questions and 2 hours, a four-function calculator, and scratch paper - both provided at the testing center. Results are delivered immediately after you finish, so there's no waiting period to find out if you passed.
- Cost per attempt: $64
- Question count: 100
- Time allowed: 2 hours
- Passing score: 70%
- Score validity: 12 months
Before you can even schedule a seat, you must apply to TDA, pay the $200 commercial applicator license fee, and wait for a TDA eligibility letter that includes your account number. Only after you have that letter can you book a testing appointment. For a full cost breakdown including how the $64 exam fee and $200 license fee interact, check TX-PEST Certification Cost 2026, and for the step-by-step eligibility process, see TX-PEST Requirements 2026.
Key Takeaway
Don't schedule your exam date until your TDA eligibility letter and account number are in hand - Metro Institute requires that number at booking, and delays here are the most common reason candidates push their start date.
Domains 1-5: Certification, Law, and Registration
The first five domains form the legal backbone of the exam. They're heavily sourced from AES-5056 and tend to feel like reading comprehension under pressure - the answers are in the manual, but the wording on test day is often more precise than casual studying prepares you for.
Domain 1: Pesticide Applicator Certification and Licensing
Covers who must be certified, categories of certification, and the difference between commercial and noncommercial applicator status in Texas.
- Know which activities legally require a license versus supervised, uncertified labor
Domain 2: State Laws and Regulations
Texas-specific statutes and TDA rules governing sale, use, and enforcement of pesticide law.
- Focus on TDA's authority to inspect, suspend, or revoke licenses
Domain 3: Federal Pesticide Laws
FIFRA and related federal statutes that set the baseline every state program builds on.
- Understand how federal registration interacts with state enforcement
Domain 4: Toxicity of Pesticides
Signal words, toxicity categories, and how LD50/LC50 values translate into label warnings.
- Memorize the four signal word tiers and their corresponding toxicity ranges
Domain 5: Residue, Tolerance, and Registration
How EPA sets tolerances, what residue limits mean for treated commodities, and the registration process for products.
- Distinguish between "tolerance" and "restricted use" classifications
These five domains are also the ones most confused with other credentials that share the acronym "TX-PEST" - this guide only ever describes the Texas Department of Agriculture's commercial pesticide applicator program, so every legal fact you study here applies specifically to that path.
Domains 6-9: Environment, Safety, and First Aid
This cluster shifts from law to real-world risk management - protecting ecosystems, applicators, and bystanders. Expect scenario-based questions rather than pure definitions.
Domain 6: Ecology and Environmental Protection
Non-target species, groundwater contamination risk, buffer zones, and endangered species considerations.
Domain 7: General Safety Precautions
Handling, transport, and storage practices designed to prevent exposure incidents before they start.
Domain 8: Protective Equipment and Personal Safety
PPE selection tied to label instructions and toxicity category - gloves, respirators, coveralls, and eyewear.
- Match PPE requirements to specific formulation types, not generic assumptions
Domain 9: Pesticide Poisoning and First Aid
Recognizing symptoms of exposure and the correct first-response steps before professional medical help arrives.
Domains 10-14: IPM, Pests, and Products
This is the applied science stretch of the exam - how you identify a problem and choose the right tool.
Domain 10: Integrated Pest Management
The decision framework for combining biological, cultural, mechanical, and chemical controls rather than defaulting to chemicals first.
Domain 11: Pests
Broad pest categories - insects, weeds, pathogens, vertebrates - and how their biology influences control strategy.
Domain 12: Types of Pesticides
Classifying products by target pest and mode of action (insecticides, herbicides, fungicides, rodenticides, and more).
Domain 13: The Label
Arguably the single most tested concept on the exam - the label is the law, and questions test your ability to locate and interpret specific sections.
- Practice reading signal words, REI (restricted entry interval), and PPE statements together
Domain 14: Formulations
How a product's physical form (liquid, granule, dust, bait) affects handling, mixing, and application method.
Domain 13 alone deserves its own review pass. If you want a condensed reference for label vocabulary and the recurring facts examiners lean on, our TX-PEST Cheat Sheet is built around exactly this kind of high-yield recall.
Domains 15-19: Mixing, Equipment, and Weather
These five domains are where the math and mechanics live. Expect the calculator-eligible questions to cluster here.
Domain 15: Filling and Mixing Practices
Order of operations for tank mixing, compatibility issues, and avoiding contamination during loading.
Domain 16: Calculations for Mixing Pesticides
Dilution ratios, percentage concentrations, and area/volume math - this is where the provided four-function calculator earns its place in your exam kit.
- Practice converting label rates (oz/acre, %v/v) into tank-mix quantities
Domain 17: Equipment
Sprayers, spreaders, and application hardware - nozzle types, pressure systems, and maintenance basics.
Domain 18: Calibration
Verifying that equipment delivers the intended rate - a frequent source of scenario math questions.
- Know the basic calibration formula relating speed, swath width, and output
Domain 19: Weather-Wise Application
Temperature inversions, wind speed limits, and drift risk tied to weather conditions at application time.
Key Takeaway
Domains 16 and 18 are the most math-heavy sections of the exam. If arithmetic under time pressure worries you, dedicate extra practice sessions specifically to dilution and calibration problems rather than re-reading definitions.
Domains 20-22: Disposal, Storage, and Records
The final stretch of domains covers what happens after application - closing the loop responsibly and legally.
Domain 20: Disposal
Container disposal, triple-rinsing, and disposal of unused product in compliance with label and state rules.
Domain 21: Storage
Segregation of incompatible products, temperature considerations, and security requirements for pesticide storage sites.
Domain 22: Record Keeping and Liability
What commercial applicators must document, how long records must be retained, and how recordkeeping ties into liability if something goes wrong.
These three domains connect directly to the ongoing obligations of licensed applicators - the same discipline that carries into annual recertification once you're working in the field.
Mapping the Domains to a Study Schedule
With 22 domains and 100 questions, you can expect the exam to distribute questions unevenly, with heavier emphasis on label reading, laws, and calculations than on any single niche topic. A practical way to structure prep is to batch related domains into weekly blocks rather than studying them in numerical order.
Legal Foundation
- Domains 1-5: certification, state/federal law, toxicity, registration
Safety and Environment
- Domains 6-9: ecology, safety precautions, PPE, poisoning response
Pest Science and Products
- Domains 10-14: IPM, pest categories, pesticide types, the label, formulations
Math and Mechanics
- Domains 15-19: mixing, calculations, equipment, calibration, weather
Compliance and Full Review
- Domains 20-22: disposal, storage, recordkeeping, plus full-length timed practice
This is a general framework, not a rigid rule - adjust pacing based on which domains feel weakest in early practice. For a deeper breakdown of how to allocate study time and which resources to prioritize, read the full TX-PEST Study Guide. And if you're trying to gauge realistically how tough this exam is compared to other licensing tests, our difficulty guide walks through that in detail.
| Domain Cluster | Primary Skill Tested | Best Study Format |
|---|---|---|
| Domains 1-5 (Legal) | Recall of statutes and definitions | Manual reading + flashcards |
| Domains 6-9 (Safety) | Scenario judgment | Practice questions with explanations |
| Domains 10-14 (Pests/Products) | Classification and label interpretation | Label-reading drills |
| Domains 15-19 (Application) | Applied math and equipment logic | Calculator-based practice problems |
| Domains 20-22 (Compliance) | Procedural recall | Manual review + spaced repetition |
Running full-length timed practice sets on our practice test platform is one of the most efficient ways to confirm whether your domain-by-domain prep is actually translating into exam-ready recall under the real 2-hour time limit.
After You Pass: Recertification
Passing the general exam is only step one - licensure also requires passing at least one category exam matched to the work you'll actually perform (turf, agricultural weed control, structural, and so on). Once licensed, commercial and noncommercial applicators recertify annually, earning 5 CEUs per cycle. That total must include at least one credit from each of two areas selected among laws and regulations, integrated pest management, and drift minimization - a direct continuation of Domains 2, 10, and 19 covered on the general exam.
Because your general exam score is only valid for 12 months, it's worth scheduling your category exam soon after passing rather than letting the window lapse. For the exact timing mechanics and how testing calendars work at Metro Institute locations, see TX-PEST Exam Dates 2026. If you're curious what jobs actually require this license once you're certified, browse TX-PEST Jobs, and for a plain-language explainer on the credential itself, start with What Is TX-PEST Certification?
Frequently Asked Questions
Not necessarily equally, but every domain is fair game across the 100 questions. Heavier study time on label reading (Domain 13), calculations (Domain 16), and law (Domains 1-3) tends to pay off most, since these areas anchor many other domains conceptually.
You need 70% overall on the 100-question exam - there's no indication the domains are scored or weighted separately, so a strong overall command of the manuals matters more than perfecting any single domain. See TX-PEST Passing Score 2026 for more detail.
The Texas A&M AgriLife General manual (AES-5073) covers the applied science and safety domains, while the Laws and Regulations manual (AES-5056) covers the legal domains. Both are the primary study sources for this exam.
Yes. A four-function calculator and scratch paper are provided at the testing center for domains like Calculations for Mixing Pesticides and Calibration, so you don't need to bring your own.
Results are delivered immediately after you complete the exam at the Metro Institute testing center - there's no waiting period for scores.