Aniroc,of course we would all try to help,we do not want to see Ford lose his loving home and it is very obvious you love him
As for the covered boxes,my cats did not like them,I tried them once.
I could imagine the smell is ten times worse in there,also they will breath in more dust.
I have 2 large rubbermaid boxes for 3 cats,I've tried all kinds of litters but I am back to Costco's clumping litter,I am not happy about it,but that's what the cats like,I am not taking any chances they would prefer to pee somewhere else.
May I ask where you get your Feli-Way,they are not available here anymore,so I buy mine off E-Bay,I just ordered 4 refills for $79US,I use the same seller in New York all the time.
The 4 refills will last for 2 months.
I almost hope there is something medically wrong with him,nothing serious,just so it can be corrected
21lb's is huge,my biggest kitty is 17,5 lb's
Please let us know what the vet says and pics please