Homedics TotalClean 5 in 1 Petplus Air Purifier Replacement Filter - for Large AP-PET35AWT-CA - 15-11929TotalClean PetPlus AP T35 replacement HEPA type filter for Homedics TotalClean 5 in 1 PetPlus Air Purifier (AP PET35AWT CA). Description This filter comes with built in PetPlus activated carbon odour filter to reduce litter box odour, wet dog smell, and household odours. It removes up to 99. 97% of airborne allergens as small as 0. 3 microns; frees air from pollen, dust, pet dander, germs, mold spores and smoke. Replace filter every 12 months for