The duration of use of litter in place is around a short week odorless, the system used here is great.
To: clever, simple of use, very well studied.
Cons: not suitable for large litter box
Conclusion: This product is definitely a great advanced in terms of comfort, ease of use, the format is firmly focused on the urban model, easy to carry and bit heavy. I also find very suitable for pregnant women by limiting the risk of toxoplasmosis.