Triple ought as in 000, look like a shredded wheat biscuit, and you can find them in almost all hardware stores. You can also get 0000, even finer. Lemon oil furniture polish is available in supermarkets. I use the brand Old English. There's always a gunky coating on even "not-so-old" furniture - this method takes it off. If you want to try even less invasive techniques, use the lemon oil and an old towel or washrag. But it's more rubbing. Putting the item out in the sunshine after treatment helps too. Because I've done this for lots of years, I also use mineral spirits. For the first rub. Then I use the lemon oil. But mineral spirits can remove more of the finish than you may want. And it can soften a finish.
Whatever you use, washrag or 000, rub vigorously with the grain of the wood. And after the sunshine treatment, let the wood cool down and use a good clear paste wax. It will restore the sheen. KB