1993 Buick Century Owner's Manual - Page 106

Ashtrays I - I Reachunderthefront edge of theashtraycompartment to open it. To clean the ashtray, reach under the ashtray and push up from behind it. To clean the rear ashtrays, fully open the ashtray. Press down onthe snuffer as you pull the ashtray down and out. on't put papers and other things that burh to your ashtrays. If you do, cigaretteso r ther smoking materials could set them on re, causing damage.