The short answer
- Identify the pest first: many organisms are harmless or beneficial, and correct identification avoids using a pesticide that isn't needed or isn't the right one.[1][2]
- Decide how much is too much: seeing a single pest doesn't always mean you need to act.[1]
- Prevent problems by changing what lets the pest thrive, such as caulking cracks that let insects and rodents in.[2]
- When control is needed, choose effective, less risky methods first, such as trapping, or a pesticide in a bait station rather than a spray; broadcast spraying of non-specific pesticides is a last resort.[1][2]
- Keep checking afterward. Compare pest numbers before and after you act, and give a method time to work before you judge it.[5][7]
What IPM is, and what it isn't
UC IPM defines it as an ecosystem-based strategy aimed at long-term prevention of pests or their damage, using a mix of techniques such as biological control, habitat changes, different cultural practices and resistant varieties. Pesticides are used only after monitoring shows they are needed, and treatments aim to remove only the target organism.[2]
The EPA describes IPM as a series of pest management evaluations, decisions and controls rather than a single method, and says it works in non-farm settings such as the home, garden and workplace.[1]
IPM is not the same as organic. The EPA notes that organic production uses many of the same ideas but limits pesticides to those from natural sources, and Kentucky Extension says some IPM programs use synthetic pesticides that an organic site would not allow.[1][7]
Sources differ on how late pesticides should come. NPIC calls them a last resort when other options have failed, and the EPA puts broadcast spraying of non-specific pesticides last. Kentucky Extension places IPM between "spray 'em all" and "never use pesticides" and says pesticides don't have to be the final option, as long as they are used in the least disruptive way possible.[3][1][7]
- UC IPM lists six parts common to all IPM programs: identifying the pest; monitoring pest numbers and damage; guidelines for when action is needed; preventing problems; combining biological, cultural, physical/mechanical and chemical tools; and checking the effect after action is taken.[2]
- NPIC's version for the public stresses knowing the pest's habits, life cycle, needs and dislikes, using the least toxic methods first, tolerating harmless pests, and setting a threshold for when to act.[4]
EPA's four steps
- Set action thresholds: the point at which pest numbers or conditions mean you should act.[1]
- Monitor and identify pests accurately so control decisions fit the actual problem.[1]
- Prevent: manage the crop, lawn or indoor space so pests don't become a threat; these methods can be very effective and cost-efficient with little to no risk.[1]
- Control: evaluate methods for both effectiveness and risk, starting with the least risky and moving to targeted pesticide use only if needed.[1]
Step one at home: know what you have
The EPA's homeowner guide calls identification the first and most important step. Some pests are unmistakable, but other signs mislead: what looks like a plant disease may come from poor soil or lack of water.[5]
If the pest is misidentified, UC IPM says, you won't be able to choose an effective pesticide or other method, and some beneficial insects get mistaken for pests. Kentucky Extension adds that identification helps rule out problems with no pest behind them at all.[6][7]
- Identify the pest in the most specific terms you can, then learn its biology and find where it travels and where its home base is, NPIC advises.[4]
- Free help is available from county Cooperative Extension offices and Master Gardeners, according to the EPA, UC IPM and Kentucky Extension.[5][6][7]
- Most people recognize a cockroach or a mouse, the EPA notes; for anything less obvious, a field guide, a gardening book or a local nursery can also help.[5]
Monitoring: how to watch pests without guessing
Monitoring means checking a site to see which pests are present, how many there are and what damage they've caused, UC IPM says. Kentucky Extension calls it the foundation of IPM, because it catches populations while they are easiest to manage, and also the most often neglected part, because it takes time.[2][7]
- In the garden, Kentucky Extension suggests regular checks of flowers, leaves, fruits and stems, with extra attention to new growth. Look for the pest itself and for the evidence it leaves; a hand lens helps, and some pests are easier to confirm at night.[7]
- Yellow sticky cards, pheromone traps and bait traps can be set out and checked regularly; once a certain number are trapped, treatment may be recommended.[7]
- Indoors, UC IPM calls sticky traps the best way to detect and monitor cockroaches. Traps placed in several spots and checked regularly show where infestation is worst and whether control is working.[9]
- The EPA's child care IPM training says to write the date on each sticky trap, inspect traps weekly, write down how many cockroaches were caught, and replace the traps each time.[10]
- Keep notes. Kentucky Extension recommends records and maps of pest problems from year to year to make the garden more predictable and find hot spots, and the EPA's building IPM guidance asks for a log of each effort with the date, pest, control method and result.[7][8]
Setting an action threshold for your home
An action threshold is the pest level at which its presence becomes a nuisance, health hazard or economic threat, the EPA says. Kentucky Extension separates economic thresholds, worked out for large-scale farming, from action or aesthetic thresholds, which suit lawns, landscapes and home gardens and allow fewer pests.[8][7]
Indoors the bar can be very low. Kentucky Extension says that for pests such as bed bugs or rats, seeing just one may be enough to start management.[7]
- Outdoors, UC IPM says one or two caterpillars on a plant may not justify a pesticide, especially with natural enemies around, while a large population causing severe leaf loss or damaging fruit or nuts may.[6]
- Base the decision on how many pests are present, not on damage alone. By the time a tree is stripped of leaves, UC IPM notes, the pests are often gone and a pesticide will do nothing.[6]
- Pest control isn't pest elimination. The EPA warns that insisting on getting rid of every pest leads to more extensive, repeated and possibly hazardous chemical treatments than needed.[5]
- The EPA's homeowner questions: does the lawn need to be totally weed-free; do you need to kill every insect when some are beneficial; could sensitive plants be swapped for hardier ones; can you live with some blemished produce; and is anyone in the home particularly sensitive to chemicals?[5]
- For lawns, the EPA notes that a lawn that is 15 percent weeds can look almost weed-free to a casual observer, and a healthy lawn will always have some weeds and insect pests.[5]
- The same pest can matter in one spot and not another. The EPA's example: cutworms may be a key pest on a high-visibility athletic field but tolerable on the lawn next to it.[8]
Prevention: take away food, water and shelter
Pests look for air, moisture, food and shelter, the EPA says, and the best control is keeping them from getting into the home or garden by removing what they need. UC IPM agrees that many indoor and outdoor pest problems can be solved by removing food, water or shelter.[5][6]
- Water: fix leaky plumbing, don't leave water in houseplant trays, under the refrigerator or in buckets overnight, and dry out water-damaged materials; even dampness or high humidity can attract pests.[5]
- Food: store it in sealed glass or plastic containers, keep the kitchen free of grease, don't leave pet food out for long periods, and use tightly covered garbage cans emptied often.[5]
- Shelter and entry: caulk cracks and crevices, don't keep newspapers, paper bags and boxes for long periods, check packages for pests before bringing them in, put screens on floor drains, windows and doors, and weatherstrip doors and windows.[5]
- Outdoors, the EPA advises removing wood piles from under or around the home, raking leaves, clearing fallen fruit and prunings, and keeping vegetation, shrubs and wood mulch at least 18 inches from the house.[5]
- In the garden, Kentucky Extension recommends putting the right plant in the right place, since stressed plants suffer more pests, and choosing resistant or tolerant varieties. Overfertilizing can stress plants, and insects can be drawn to plants given too much nitrogen.[7]
- Fall cleanup removes overwintering habitat and can remove eggs and pupae, Kentucky Extension says.[7]
Control methods, from UC IPM
UC IPM's homeowner guide gives examples for each group: correct pruning, fertilizing and watering, and cleaning up clutter and crumbs (cultural); mulches, mesh screens, caulking and weather stripping (physical); hand tools, a spray of water to knock insects off leaves, and snap traps (mechanical).[6]
Kentucky Extension draws a line between the two that often get lumped together: physical controls keep pests out or make conditions unsuitable, while mechanical controls destroy the pest or its ability to reproduce.[7]
- Biological control uses natural enemies: predators, parasites, pathogens and competitors.[2]
- Cultural controls change practices that help pests establish and survive; too much irrigation, for example, can increase root disease and weeds.[2]
- Mechanical and physical controls kill pests directly or keep them out, such as rodent traps, mulches and screens.[2]
- Chemical control means pesticides, used only when needed, combined with other methods, and chosen to be the most selective and safest option that will do the job.[2]
- Non-chemical methods are generally effective for longer than chemical treatments and less likely to produce pesticide-resistant pests, the EPA says, but results may not be immediate.[5]
- Biological control won't wipe out a pest population; Kentucky Extension says some background level of pests will remain. Bought-and-released natural enemies have had their best results in greenhouses or when small or immature agents are used.[7]
If you decide to use a pesticide
UC IPM's advice is to use a pesticide only when nonchemical methods haven't worked and pests are reaching intolerable levels, then pick the least toxic product that works. "Least toxic" refers to effects on people and the environment, not on the pest.[6]
The EPA points out that pesticide use in and around the home is one of the greatest causes of human pesticide exposure, that results are generally temporary, and that some pests become resistant over time.[5]
- Least-toxic examples UC IPM gives include bait stations, insecticidal soaps and oils, and microbial insecticides such as Bt.[6]
- Treat only what needs it. UC IPM suggests bait stations instead of sprays and spot-spraying a few weeds instead of a whole area; Kentucky Extension lists spot treatments of small areas and applying at dusk to avoid pollinators.[2][7]
- Formulation changes the risk. Kentucky Extension gives the example of a granule instead of a liquid spray to cut residue exposure for bees.[7]
- Don't pick a product from the pictures on the container. UC IPM says labels often show pests the product controls only marginally; check that your pest and the site are listed.[6]
- Plan for resistance. Kentucky Extension says the pressure pesticides put on pest populations can lead to resistance, and that IPM programs should rotate between different modes of action.[7]
- Read the label before buying, before mixing or using, and before storing or disposing; the EPA says using a pesticide in a way inconsistent with the label is illegal.[5]
Check whether it worked
Once a method is in place, the EPA says to allow time for it to work, then compare conditions before and after treatment and ask whether pest numbers have clearly dropped. It also suggests weighing short-term chemical control against long-term control from a mix of methods.[5]
Keep monitoring after you act. Kentucky Extension says follow-up monitoring shows whether the plan worked, suggests what to try next if it didn't, and helps track problems such as pesticide resistance.[7]
Traps help here too. UC IPM notes sticky traps are very helpful for judging whether a cockroach control program is working, and the EPA's child care training has staff write down how many roaches each trap catches to track activity up or down.[9][10]
IPM at home
The same principles large farms use apply to a home garden, and your state's Extension Service and Master Gardeners can help with specifics.[1]
NPIC recommends the same order at home: prevention, sanitation and exclusion first, with pesticides as a last resort, reading the label and using the lowest-toxicity product that will work.[3]
Common questions
- Does IPM mean no pesticides?
- No. The EPA says IPM uses all appropriate options, including judicious use of pesticides, and Kentucky Extension says IPM does not necessarily exclude them; the aim is to choose the least toxic material that will do the job.[1][7]
- Is IPM the same as organic pest control?
- No. Organic methods limit pesticides to those from natural sources, while some IPM programs use synthetic pesticides, according to the EPA and Kentucky Extension.[1][7]
- What is an action threshold?
- The pest level at which you act. The EPA defines it as the point where a pest's presence becomes a nuisance, health hazard or economic threat; for indoor pests such as bed bugs or rats, Kentucky Extension says one sighting may be enough.[8][7]
- How do I monitor for pests at home?
- Inspect regularly and use traps: sticky traps for cockroaches and other crawling insects indoors, and sticky cards or pheromone traps in the garden. Date the traps, check them on a schedule and keep notes.[9][10][7]
- Who can help me identify a pest?
- Your county Cooperative Extension office and Master Gardeners, according to the EPA and UC IPM. NPIC can help compare pesticide products.[5][6][3]
IPM tools in practice
Sources
- U.S. Environmental Protection Agency, “Integrated Pest Management (IPM) Principles.” www.epa.gov/safepestcontrol/integrated-pest-management-ipm-principles (accessed 2026-10-06)
- University of California Statewide IPM Program, “What Is Integrated Pest Management (IPM)?.” ipm.ucanr.edu/what-is-ipm/ (accessed 2026-10-06)
- National Pesticide Information Center, “Minimizing Pesticide Exposures.” npic.orst.edu/health/minexp.html (accessed 2026-10-06)
- National Pesticide Information Center, “Integrated Pest Management (IPM).” npic.orst.edu/pest/ipm.html (accessed 2026-11-10)
- U.S. Environmental Protection Agency, “Citizen's Guide to Pest Control and Pesticide Safety (EPA 735-K-04-002).” www.epa.gov/sites/default/files/2017-08/documents/citizens_guide_to_pest_control_and_pesticide_safety.pdf (accessed 2026-11-10)
- University of California Statewide IPM Program, “Understanding Pesticides (Pest Notes: Pesticides: Safe and Effective Use in the Home and Landscape).” ipm.ucanr.edu/home-and-landscape/pesticides-safe-and-effective-use-in-the-home-and-landscape/ (accessed 2026-11-10)
- University of Kentucky Cooperative Extension, “ENT-69: Integrated Pest Management (J.L. Larson, revised 01-2024).” publications.ca.uky.edu/sites/publications.ca.uky.edu/files/ent69.pdf (accessed 2026-11-10)
- U.S. Environmental Protection Agency, “Integrated Pest Management in Buildings (EPA 731-K-11-001).” epa.gov/sites/default/files/2015-11/documents/ipm_in_buildings.pdf (accessed 2026-11-10)
- University of California Statewide IPM Program, “Pest Notes: Cockroaches (Home and Landscape).” ipm.ucanr.edu/home-and-landscape/cockroaches/ (accessed 2026-11-10)
- U.S. Environmental Protection Agency, “Integrated Pest Management for Child Care Settings, Module 6: Managing Cockroaches in Child Care Centers.” www.epa.gov/sites/default/files/documents/Module06.pdf (accessed 2026-11-10)