Leaving them unclean will make animal susceptible to ear issues. Even the toothpaste we use daily contains flouride inside and adds to its buildup the body. Make use of the specially designed dog and puppy toothpaste and long handled paint brushes. We didn't have anyone in Guam anticipating us. http://Nlifelab.org/bbs/board.php?bo_table=free&wr_id=3154304