Unplug the Dirt Devil vacuum power cord as a safety precaution.
Press the release latch, located above the waste bin, and the bin loosens from the vacuum body.
Pull the bin off of the vacuum. Pull the bin's lid off.
Grab the filter and twist it to loosen it. Pull up on the filter to remove it.
Fill the plastic bin with warm water and add 1 tsp. of dish-washing soap to the water. Use a scrub brush to clean the inside of the bin.
Empty the bin out, rinse with warm water. Repeat until all of the soap has been removed. Place the new filter into the bin and twist to fasten it.
Push the bin's lid back on top, and push the bin back into place.