Hi, is there any safe, natural dental chews that can be used to treat plaque and tartar build-up and even red, sensitive inflamed gums where the plaque and tartar build-up is? Or any gels that will sooth the red, sensitive inflamed gums? Should I try and brush where the tartar and plaque is to try and remove it? Or just leave it as it seems sensitive there and could hurt? Any information, advice or suggestions would be great to try at home before going to the vet! Thank you!