My cat is normal overall, but usually I get up in the morning and there's something to clean. There was nothing.
Yesterday I got him a new litter box with new silica litter. Up until this point, he was mainly using clay. I have tested silica with him before and he did use it. He's not usually picky about this type of stuff, but maybe he is? He's eating and drinking and acting normal. I poured back some of the new litter into the bag it came from and poured a majority of old litter on top to see if that will work.
How long can he go on without using the bathroom even when he's eating and drinking? Is he throwing a tantrum?