While it's possible to flush things like dental floss, hair, cotton swabs, cotton balls, and condoms down the toilet, it is a bad idea. These items do not break down in water, and they can tangle with other items and block your sewer line. Just because something is used or dirty doesn't mean it should go down the toilet. Personal care items belong in the trash can.
Toilets are not designed to handle materials other than toilet paper and human waste. Household items, such as wipes, cleaning cloths, paper towels, feminine hygiene products, and personal care products may lead to a clog in the toilet that a plunger might not be able to fix. Plumbing problems are often caused by flushing materials that are not flushable. Many household products do not break down like toilet paper. Toilet paper is designed to start breaking apart as soon as it contacts water, making it less of an obstruction to toilets and the pipes below.