Domestos 1) Twist cap counterclockwise. 2) Inject gel under the rim. 3) For best results apply undiluted to entire inner surface of the bowl. Leave for 30 minutes, then remove remaining dirt if necessary. 4) Repeat for persistent dirt. Effective against bacteria and fungi. Use only in the toilet. Keep away from light, store in a cool dry place, separate from food. Pay attention to safety when using biocides. Toilet Cleaners