Plant litter "Cat's Best" OkoPlus

My Leeloo is unfortunately very big achievement allergies that make him lose his hair and develop a major skin disease.
I used a clumping litter sold in hypermarket, but wanting to avoid as much allergen products, I opted for this natural litter. Leeloo is very difficult and do not like change, but even so, she adopted without problems.
No smell of droppings, litter quickly absorbs the liquid by making dumplings and keeps its good pine odor.
To clean, simply remove the meatballs and dry feces with a suitable shovel, and complete litter height in the tray. Complete replacement of the litter every 3 weeks. Economically speaking, I am confused without problems since I replaced the other litter completely every 3 days !!!
Only drawback, it hurts dust ... but this does not appear to adversely affect Leeloo, so for me it's ok !!!