Taking the recommendatiion of many DK members, I have finally located a local store that sells this product. The lady at the store said to just use a cotton ball wet with the solution and wipe out his ears. The bottle's directions says to liberally pour it into the ear, massage it, and then wipe out excess with cotton ball or swab.
I finally found it at a "high-end" independent pet store after exhausting all the chain stores...PetSmart, Pet Supplies Plus, etc. It cost $20 for a 16 oz bottle. My next place to look would have been online.