I splurged and bought two containers of Bostik NeverSeal grout (Lowe's P/N 442162). At about $75 per container it was pricey, but it doesn't need to be sealed. And with all the foot traffic of kids and pets, I don't want dirty stained grout in three months. I used a similar product from Lowe's about seven years ago that still looks brand new today. Totally worth it.
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