What items are banned from a roll-off dumpster?
The list is longer than most people expect. Liquids of any kind, including old paint and used motor oil, are out, and so are car batteries, tires and propane cylinders. Refrigerators, air conditioners and anything with refrigerant need separate handling because of the coolant inside. Asbestos siding or insulation is banned outright, as is any medical or biohazard waste. Tree stumps and large amounts of wet concrete often exceed what a standard bin can carry safely, so ask before you load them. If you are gutting a kitchen during a home renovation porta potty job, set the appliances aside and call around for a scrap hauler instead. For a full rundown of sizes and what fits where, the dumpster sizes and dimensions page breaks it down by yardage. San Marcos Porta Pros flags these bans on delivery, because a contaminated load can get an entire container rejected at the landfill, and the same crew can set up a roll-off dumpster rental alongside a portable toilet rental for the same job site.
Why can't I just throw paint or chemicals in the dumpster?
Because they contaminate everything else in the load and the landfill will not take it. Loose liquids soak into cardboard, drywall and wood debris, turning a clean load of construction scrap into hazardous waste that has to be sorted by hand or rejected outright. Household hazardous waste, herbicides, insecticides and solvents fall under this same rule. OSHA 1926.51(f)(1) requires washing facilities on job sites where workers apply paints, coatings, herbicides or insecticides, which is a reminder of how seriously these materials are treated even before disposal. If your crew is spraying finish on a fence line or treating a field, pair that work with a handwashing station rental instead of assuming a hose will do. Dried, empty paint cans are usually fine, but full or half-full cans are not. When in doubt on a specific chemical, ask before it goes in, and review general jobsite sanitation rules on the OSHA portable toilet requirements page while you are at it.
What happens if banned items end up in my dumpster anyway?
The hauler charges extra to remove and dispose of them properly, and in some cases the whole container gets flagged and returned. This is the part that surprises first-time renters most. Transfer stations inspect loads, and a battery or a can of solvent mixed into demolition debris means someone has to physically pull it out. That labor gets billed back to you, on top of whatever the item's proper disposal costs. It is cheaper, every time, to sort it out before pickup, the same way sorting out toilet counts ahead of time on the how many porta potties do I need guide saves a scramble later. If you are running a bigger job with mixed trades, a construction dumpster rental with a clear list of exclusions posted for the crew saves everyone a headache. Weight matters too. Concrete, dirt and shingles are heavy, and going over your container's rated limit brings its own charges, covered in more detail on the dumpster weight limits page.
Where can I take the stuff that can't go in the dumpster?
That depends on the material, and San Marcos residents typically route it to a household hazardous waste facility or a specialty recycler rather than the curb. Electronics, batteries and fluorescent bulbs usually go to e-waste recyclers. Tires often get taken back by tire shops for a small fee. Paint, depending on how much you have, sometimes qualifies for a paint-specific recycling program. None of this ships in your roll-off, so plan the drop-off before delivery day, not after the bin is full, much like scheduling a septic pumping service ahead of a full tank instead of after. If you are working a property near Lake San Marcos, 3.2 miles west of the city, or out toward Elfin Forest, 6.8 miles south, factor the extra drive time for hazardous drop-off into your schedule. Renting the right size the first time also helps: check the dumpster rental cost guide and the 10 yard dumpster rental or 20 yard dumpster rental pages before you commit to a size.
Pricing at a glance
| unit | duration | typical price |
|---|---|---|
| Dumpster | day | $75 |
| Dumpster | week | $600 |
| Dumpster | month | $108 |
Prices vary by size and what you are disposing of, similar to how a storage container rental or temporary fence rental price depends on duration and site access. See dumpster permit requirements if the container needs to sit in a driveway, alley or street.
Frequently asked questions
What items are strictly forbidden in any dumpster?
Hazardous liquids, batteries, tires, propane tanks, refrigerants, asbestos and medical waste top the list. These require separate disposal paths regardless of dumpster size. San Marcos Porta Pros reviews this list with every customer at booking so nothing gets loaded that will hold up pickup or cost extra at the transfer station.
Can I put a mattress or furniture in a roll-off dumpster?
Usually yes, mattresses and furniture are accepted in most standard roll-off loads. They take up volume fast, though, so factor that into which size you book, the same way an 8 stall restroom trailer needs more clearance than a single standard unit. Check 30 yard dumpster rental or 40 yard dumpster rental if you are clearing out a whole house alongside construction debris.
Does yard waste count as banned material?
No, yard waste is generally fine in a roll-off, but wet, heavy loads like soaked branches or root balls can push you over the weight limit fast. Spread heavy debris evenly and ask your hauler if a stump or a large amount of dirt needs its own container, the way a light tower rental or temporary power pole gets its own delivery slot on a busy site.
Will the company tell me what not to load?
Yes. San Marcos Porta Pros walks through banned items at delivery and leaves a reference list with the container. If you are unsure about a specific material, a quick call before loading day beats a rejected pickup later. Request details through request a quote.
What if I accidentally load something that's not allowed?
Call before the truck arrives for pickup. Pulling a banned item out yourself is almost always cheaper than having the hauler sort it at the transfer station. If it is something like a car battery or a paint can, set it aside and dispose of it separately through a hazardous waste program, and check the contact page or the FAQ if you need a hand sorting out the rest.
Next step
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