Biodegradable formula without the addition of preservatives, dyes and synthetic fragrances. Guaranteed effectiveness for these effervescent toilet tablets without packaging with a pleasant lavender smell. Put 1 tablet directly into the toilet and let it work for 30 minutes. Cleans - Disinfects - Descales They are made and moulded by hand and then dried in the open air. A little bit of elbow oil, know-how and that's it! KEEP OUT OF REACH OF CHILDREN - DO NOT SWALLOW