Scotch-Brite Scrub Sponges are my favorite sponges to use for household cleaning, dishes, and even deep-floor scrubbing. They're around $4-5 per pack, and each pack contains four sponges. I pick them up at my local Dollar General about once per month, so I go through about one sponge per week. The sponges are versatile, durable, and effective. They're a must-have in any cleaning supplies basket!