Would this treatment help on the black water tank

we use Thetford black tank chemicals. Worth it. No smell. I don't think Dawn dish detergent by itself will mask odors in the black tank. My brother in law used Lysol but I don't like the smell of it. When it's hot out we use extra chemicals.
for the gray tank we use 1 cup of Dawn Platinum and 1 cup of Borax mixed with hot water. No gray tank smell and clean tank.