Open the cabinet under almost any kitchen sink, then check the garage shelf and the basement corner. You will likely find the same inventory: half-used cans of paint, a jug of antifreeze, corroded batteries, an aerosol can of something nobody remembers buying. As much as 100 pounds of hazardous material can pile up in a single home, much of it sitting untouched until the residents move out or finally clear the clutter, according to Environmental Protection Agency estimates.

Household hazardous waste, including the paints, solvents, pesticides, cleaners, and automotive fluids that become toxic, corrosive, or flammable when discarded, is among the most loosely tracked streams in the American waste system. Most of it has no producer-funded route to recovery, so it lands in trash cans, storm drains, and back shelves.

One product is the conspicuous exception. Leftover paint, the largest category by volume, now has a working multi-state recycling system operated by PaintCare and funded by the industry. What that system has accomplished points directly at how to handle the rest.

The waste hiding in plain sight

As of 2018, the last year the EPA collected data, the average American generated an average of about four pounds of household hazardous waste a year — roughly 530,000 tons nationally. Paint, used motor oil, batteries, pesticides, and cleaning chemicals make up the bulk of it.

The volume matters less than where it ends up. When these products go down the drain, onto the ground, into a storm sewer, or out with the regular trash, the consequences are not abstract. The EPA warns that improper disposal can contaminate groundwater and surface water used for drinking, corrode plumbing, disrupt septic systems and wastewater treatment plants, injure sanitation workers, and poison children and pets. The chemistry that makes a solvent useful in the garage makes it dangerous in a landfill leachate pond.

The regulatory gap that shaped the problem

Here is the reason so much household hazardous waste goes unmanaged: the federal government does not regulate it as hazardous waste. Under the household waste exclusion in the Resource Conservation and Recovery Act, waste from routine house and yard maintenance is exempt from the rules that govern industrial hazardous waste. It is overseen only at the state and local level, and treated as ordinary solid waste.

The practical effect is that no business is federally required to take responsibility for these products once a consumer is done with them. Collection and safe disposal fall to municipalities — and to the taxpayers who fund them — if a community offers a program at all. Many offer a single collection day a year, or none. That gap is the backdrop against which paint’s recovery system stands out.

What PaintCare built

Paint manufacturers created PaintCare in 2009, a nonprofit organized through the American Coatings Association to run paint stewardship programs in states that pass paint stewardship laws. When Maryland’s program launched in April 2026, it became the 12th state with a program, alongside the District of Columbia; Illinois had come online only months earlier, in December 2025.

The scale of the program is impressive. PaintCare reports it has managed roughly 85 million gallons of paint, stain, and varnish across its state programs. More than 70 million gallons came through neighborhood drop-off sites and events, and another three million-plus through more than 10,000 large-volume pickups for contractors and institutions with large stockpiles.

Most of what comes back is water-based latex paint, which processors remix into recycled-content paint. In California, leftover paint also becomes retaining wall blocks, landscape stones, and parking stops, a reminder that “recycling” here means real secondary markets, not just diversion from a landfill.

PaintCare offers free, year-round drop-off at paint stores, hardware stores, and municipal facilities replaces the once-a-year collection event.

Never do this:  Pour paint, solvents, or automotive fluids down the drain, onto the ground, or into a storm sewer, and never put liquid hazardous products in the trash. Keep products in their original, labeled containers, and never mix incompatible chemicals.

Who pays — and why that is the whole point

PaintCare is funded by a small fee added to new paint at the point of sale. In Maryland it runs from 50 cents to $2.25 per container depending on size, with no fee on containers a half-pint or smaller. That fee is the visible cost to a household. It is also the mechanism that makes the system work. Maryland’s law requires that 90% of residents live within 15 miles of a collection site.

This is a proven example of extended producer responsibility (EPR), the principle that the cost of managing a product at end of life should be built into the product rather than dumped on the general taxpayer. The fee funds the drop-off network, the transportation, the processing, and public education. The result is a closed loop where the people buying paint fund the recovery of paint, and the system is convenient enough that people use it.

The larger savings can’t be easily quantified: paint kept out of waterways, landfill liabilities avoided, and disposal costs lifted off municipal budgets that would otherwise carry them. Those benefits are real even when they resist a tidy per-household number.

What paint reveals about the rest

Paint is one category in a cabinet full of them. Batteries, electronics, pharmaceuticals, mattresses, and packaging are all moving toward producer-funded recovery in various states, and paint is the proof of concept that the model scales. When a modest fee funds genuinely convenient collection, such as with bottle deposit programs, material that used to vanish into the trash or the storm drain starts coming back instead.

When New Hampshire’s governor vetoed a paint stewardship bill in 2026, the stated reason was that the fee amounted to a new tax on residents. But it is not a new cost so much as a reassignment of one: the public already pays to manage household hazardous waste, less efficiently, through municipal collection days and the environmental cost of the paint that never gets collected. EPR makes that cost visible, attaches it to the product, and buys a far more effective recovery system with it.

The question is not whether households pay to deal with leftover paint — they always have — but whether that payment buys a system that works.

PaintCare’s record across 12 states and the District of Columbia is the strongest available evidence that it can. Scaling the model to the rest of household hazardous waste, and to the states that still lack a paint program is the clearest path to closing the gap that federal law left open.