I have had my cat for about 1 1/2 yrs and this is the first cat I have kept totally indoors. I keep the litter box in the garage and have a cat door where he can go in and out when he needs to. I constantly have a strong odor in the garage and the odor creeps into the house which I cant stand. I've been very careful to make sure he isn't going in the house somewhere. We had a problem with that 4 or 5 times when we first got him but as far as I can tell there is not a problem with that anymore. I keep the litter box cleaned out every day. Occasionally I may miss a day but not very often. The vet suggested changing foods and I have tried that with no success. I have changed litter brands several times with no success. I have friends that keep their litter boxes in the house and you can't tell at all. Please help. I don't want to get rid of the cat, but I can't have my house smelling like a litter box. Thanks for your help