London resident Julia Hines tweeted, "That is extraordinary! Name & shame brand (presumably shopping is also women's work)".
Another tweeter, publicity executive Vanessa Truskey, voiced her opinion: "Lately I can't tell which decade I'm living in. What brand are those trousers?! I can only assume that's a joke."
Others found the trousers suited their sense of humour.
Stephen Robinson tweeted "Someone needs to learn to take a joke", while Camilla Brown used Twitter to say: "Some people are so sensitive. It's a JOKE. And a great stunt."
In reply to the Daily Telegraph story, a Madhouse spokesman said: "The chinos in question are manufactured by a jeans brand that we stock but the care instructions on this product were not proofed by our buyers who normally concern themselves with quality, style and price of the products they order. The first Madhouse was aware of the care instruction on this product was today.
"The wording was not instigated or ordered by Madhouse. The wording is clearly meant as a joke but now it has been pointed out to us it is something we will need to be more careful about in the future."