Mr Muscle Oven Cleaner has the powerful cleaning action to make your oven sparkle. It's a foaming product with a unique self scouring formula which can be used on cold ovens (no need to heat up first). •It works by emulsifying the baked on grease, food and spills which allows you to simply wipe it away with a damp cloth, and no scraping is required.
https://flic.kr/p/xV8zse | 1977 Ad, Mr. Muscle Overnight Oven Cleaner | Tagline: "If oven cleaner fumes are leaving you all choked up... Try New Non-Aerosol Mr. Muscle. It Has Less Fumes Than Easy-Off." Published in Redbook magazine, May 1977, Vol. 149, No. 1 Fair use/no known copyright. If you use this photo, please provide attribution credit; not for commercial use (see Creative Commons license).
Mr Muscle Automatic Toilet Bowl Cleaner: Flushing the Toilet Bowl. After putting the tablet into the toilet bowl tank, wait about 5-10mins and flush the toilet bowl. The water will be blue and there will be bubbles. - Mr Muscle Automatic Toilet Bowl Cleaner: Flushing the Toilet Bowl