Quick post to get your grey cells gymming on a Sunday.
The four fine clues below have a theme to them. Solve and tell what it is.
Guardian 25934 (Rufus): A sign of wrong and right, we hear, in puzzle (8)
FT13718 (Dante): What's made for maid in house to clean and polish (9)
Guardian 26050 (Arachne): Promises no unfair wordplay (10)
Sunday Times 4476 (Anax): One is somewhat tired of waiter's method (7)
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