u/Immediate_Initial354

I have a very sweet boy, i’ve had him since he was 8 weeks old and he has always grown up with his sister who is a little older than him. over the past 2 months has been refusing to go pee in the litter box, I have already taken him to the vet, no health issues. He has not been neutered as he has a heart murmur and must see a cardiologist, we have an appt scheduled, but no spraying so we think it’s unrelated. No change in diet, litter, schedule, environment, etc that would he a stressor. I am waiting on a new auto box to ship, it’s a different brand with a different litter type (I use the pet safe with crystal litter rn) but his sister isn’t having any outside the box usage. He has peed on almost all of the clothes and blankets i own along with almost the entirety of my carpet, If this litter box change doesn’t help idk what will, I have tried everything recommended and am at a loss.. anyone advice or solution ideas are greatly appreciated!