I want my robot to clean EVERY day including my cat etc. After removing the 'dirty' filter I empty the bin. Then I remove the coarse dirt from the filter and remove the fine dirt particles from the day with blue masking tape. 4 inch duct tape will do the job just fine (don't worry, fingers can be washed with soap and water!). I have previously tried washing these filters in a Bosch dishwasher but it turned out wrong! a call to a dishwasher repairman The tape method mentioned above allows you to use each filter about 100 times! Insert freshly cleaned filters one at a time for an orderly rotation of use.