Using your Vax Power 7 Pet vacuum cleaner with this filter set is easy. First, locate the filter compartments in your vacuum. Remove the old filters and replace them with the new ones from this set. Make sure they fit snugly. When it comes to maintenance, the pre - motor filter is washable. You can take it out and rinse it under running water when it gets dirty. Let it dry completely before putting it back in the vacuum. The hepa post - motor filter can't be washed, so it needs to be replaced at regular intervals. With normal use, plan to change both filters once a year. This will ensure your vacuum cleaner continues to work effectively and keep your home clean and free from dust, pollen, and other small particles.