The guidelines vary depending on the type of filter that your vacuum uses.. As a general rule, Shark recommends cleaning pre-motor filters on a monthly basis.
Tap off excess dust and other debris into a bin..Fill the filter with cold water (open side up,) then gently rotate the filter to agitate any caught debris before tipping away the water.

Do not use hot water..Once again fill the filter with cold water, then put your hand over the top and gently shake.Tip away the water..

Repeat steps 3 and 4 until the water runs clear.Then tap off excess water..

Allow the filter to dry for at least 24 hours.
Make sure it’s completely dry before refitting.. Dyson recommends cleaning the V10’s filters at least once each month.The crevice tool is also useful for cleaning right up to the edge of skirting boards.. Light Pipe Crevice Tool.
This is similar to the regular crevice tool, but adds LEDs to make it easier to see where you’re cleaning.. Stubborn Dirt Brush.The stubborn dirt brush has stiffer bristles than the soft dusting brush, making it useful for dry dirt or other stubborn debris.. Mattress Tool..
This is a wide non-motorised tool that’s designed to clean mattresses without sticking to the fabric.It can also be used on upholstery.. Low Reach Adaptor.
(Editor: Silent Heaters)