I have 2 juvenile squirrels, approximately 10 to 11 weeks old. They will not stay in their outdoor pre release cage without freaking out. They have escaped several times. They go out in my yard in the trees mid morning and come back to the patio door at dusk to come back inside of my house to an indoor cage. I do not have a fancy setup with a shed. Just an outdoor large cage and an indoor cage with their bed and "toys". New to rehabbing. Is this behavior normal or problematic? Concerned about whether they wiill transition properly and them bringing fleas,etc. into my house.