Even if you have a shorter time horizon, you will forgo significant savings opportunities by cashing out your TSP. For example, if you are 45, your $20,000 will grow to $53,855 in 17 years. Keep in mind that even if you really need the money, you may be better off borrowing from your TSP account.
Here, in NYS, rubber floor mats take a real beating during the winter. I use Hi-Temp tire cleaner (amazing stuff) and a brush to scrub the rubber, a procedure very similar to yours. Dressing-wise, I apply whatever looks good at the time, though, I've been really liking Tropi-Care's White Pearl as of late.
Photo: Half of all rubber is used in vehicle tires, and hundreds of millions are wasted each year. I've made a very slight difference to the problem by buying this recycled rubber mouse mat, made from an old car tire. It's colored black because it's made from hard vulcanized rubber.