I have had many litter boxes and this one controls the odor and there is hardly any mess. I wouldn’t have any odor except for the issue with the feces sticking to the rake. Then I have the odor. It ends up squishing it up against the back of the box. Why is this happening? It seems to chop the feces up and spread it all over. Then I have an odor. Then I have tracking. Having to change the box after a week and a half. Help?