But now they can.
Squid Soap has just launched in Tesco stores, pounds 1.99, and is a fun way to encourage kids to keep their hands clean.
A built-in ink pad squirts coloured soap when depressed - and it doesn't come off until the child has washed their hands for at least 20 seconds ensuring they are really clean.
To win a bottle of Squid Soap and let your kids try it for themselves, all you have to do is answer this simple question.
Q: How much does a bottle of Squid Soap cost?
Send answers along with your name, address and daytime telephone number to: Squid Soap Competition, c/o Marie Turbill, Features Desk, Evening Gazette, Borough Road, Middlesbrough, TS1 3AZ. Entries must be received by August 27, 2008.
A TOTAL of 10 winners will be selected at random on August 27, 2008, to win the prize as offered. No cash alternative.
Usual GMC competition rules apply, available on request or at www.gazettelive.co.uk/legal A full list of winners is available at www.gazettelive.co.uk/winners and is updated monthly.