Wavy edges, Weaver said, are designed to solve the No. 1 problem consumers have with toilet paper: the incomplete tear. The dreaded incomplete tear. Photo illustration by Slate.

Procter & Gamble's Charmin toilet paper brand has reinvented the bath tissue square. Responding to what the company says is consumers' No. 1 complaint, Charmin is replacing the traditional ...

If you prefer to keep things square, Charmin continues to sell Ultra Strong and Ultra Gentle toilet paper and the Forever Roll, a 2-pound roll which can last for up to a month. Ranked: 10 best ...