Having dust in your home doesn’t automatically make your house unhealthy, but it can contribute to allergies and other respiratory issues. Dust is a mix of tiny particles that include dirt, dead skin cells, dust mite body parts and droppings, animal dander, and pollen, so breathing in excessive amounts isn’t good for your health. Dust accumulation can also accumulate in fabrics, mattresses, and rugs, as well as harm electronic devices if it builds up inside the system.

You’ll often find mildew and soap scum in the same place, but they are very different substances. Mildew is a substance composed of living fungi, whereas soap scum is primarily an accumulation of mineral deposits. Mildew needs chronic moisture to thrive, while soap scum is unaffected by damp conditions (though it is a residue left behind by the water).

If you don’t want to remove the sink stopper, pour ½ cup of baking soda and 2 cups of boiling water down the drain. Start by pouring 1 cup of boiling water, then the baking soda, followed by the remaining cup of boiling water. Use caution as boiling water can damage PVC or other plastic piping. Using a scrub brush or slightly abrasive sponge, clean the top of the stopper, and run the faucet to ensure the drain is clear and the stopper is clean. 

One of the best ways to prepare for a home biohazard cleanup is not to touch anything. Do not remove belongings, even if they are of value or importance, from the area as they are likely contaminated. It’s essential not to use any cleaning products of your own, as the cleaning company will be using chemicals that could interact with your products. 

One thing you can do to prepare is take pictures of your space and belongings that need to be cleaned, especially if you plan on filing a claim with your insurance company. In addition, take time to make a list of items that are valuable, sentimental, or otherwise important. The cleanup company must evaluate these belongings to make sure they are safe.