Tip: Don't flush milk down your toilet, sink or drain. Over time, the fats found in milk build up, sticking to the inner walls of sewer pipes, restricting flow, causing messy, inconvenient and expensive damage to household pipes and leading to sewer back-ups.
If you really don't want to open it you could place the whole container in the trash but it might make a mess for your garbage people. Just dump it out and rinse out the container before recycling it.
Even if your milk is fat free, it should not go down the drain – the protein in dairy can clog pipes as well. Further, milk contains bacteria that consume a lot of oxygen, leaving less for other organisms and harming the environment. If you must throw away spoiled dairy, double bag the carton and throw it in the trash.
When disposing of spoiled food or products possibly contaminated with botulism, place the food, swollen metal cans or suspect glass jar in a heavy opaque or black garbage bag. Close and place the bag in a regular trash container or bury it in a nearby landfill.
Liquid food waste should be disposed of through methods that prevent environmental damage and comply with local regulations. This typically involves collecting the waste in sealed containers and arranging for collection by licensed waste management companies.
While small amounts of milk poured down sinks probably won't kill any fish, it's still better to toss an old carton of milk into the dumpster rather than the drain.
How to Use Milk on Plants. Any type of milk, including fresh, expired, evaporated, and powdered, can be used in a garden as long as it's diluted properly. Stick with reduced-fat (2 percent) or low-fat (1 percent) milk, rather than skim or whole options.
Use Baking Soda and Vinegar
Baking soda and vinegar are great household ingredients for cleaning drains and eliminating odors. Start by pouring a cup of baking soda down your sink, then follow with a cup of white vinegar. Let the mixture sit for about an hour before flushing with hot water.
Greasy, oily foods will clog your disposal. As greasy substances cool, they solidify in your drain. There are better ways of disposing of greasy foods: Toss it.
When you pour salt down the drain at night, it gives the salt concoction enough time to work and cut through the grease and other materials which are blocking the block. In recent research, however, the use of salt as a single entity has not proved itself useful.
Don't Put Dairy Products Down Your Drain
For one, the fats in milk will cause buildup in your drain, as with FOGs, that can lead to clogs. But milk can also pose an environmental risk. The bacteria that feed on spoiled milk use up a high level of oxygen.
Seriously, some places where milk production is not the norm, may not be aware, that while its not classified as as a hazardous material, it does become a hazardous to the environment because it does displace oxygen in waterways.
Soup: If you have a liquid soup broth for the holidays, feel free to throw it down the drain. However, if it has big chunks of meat or a lot of fibrous vegetables, either just throw it out or only pour the broth down there!
The smell of sour milk does not disappear on its own, especially in an enclosed space without proper ventilation. Even with airing out, the scent will persist if the source of the spill is not addressed.
That is, storing milk on the fridge door can make the milk go bad more quickly, due to the constant temperature variation. Leaving milk out on the counter, even for less than an hour, can also cause spoilage faster.
Milk can be mixed with manure storage effluent reducing the BOD levels and potentially some odors associated with the milk. Placing dumped milk in a waste storage facility will reduce waste storage capacity. Land application times may need to be adjusted to account for reduced storage.
Water and milk are miscible liquids. These miscible liquids form a mixture known as a homogenous mixture. The opposite of Miscible liquids is immiscible liquids. These liquids do not mix with each other for example water and soil.
Coffee lovers can fall into the habit of pouring coffee grounds down the drain, but this can seriously damage pipes. Throw your grounds into the compost or trash instead. “Coffee grounds can accumulate in pipes, causing clogs and expensive future repairs,” Cherniak says.
Milk is usually good for at least a week past the last day of sale date. If you need to throw it out, you can pour it down the drain, or mix it 50-50 with water and spray or pour it in the garden.
Compost or Trash
If you do not have a compost pile at your home, check your local municipal recycling website to see if composting services are offered in your community. If composting is not an option, it goes in the trash.
Liquids. If it's a non-toxic liquid, it can go down the drain. Milk, coffee without the coffee grounds, juice, beer, dish soap, vinegar, wine, and more can be put down the drain. Even semi-liquid things like apple sauce, yogurt, and pudding can all be safely flushed down the drain.