never again

I bought the Hill's senior light for my 11 yrs old, slightly overweight tom.. Otherwise very healthy,the poor mite suffered persistent diarrhoea for about 2 weeks whilst eating the dodgy product, even though i have been very careful in introducing the new kibblets on a slow, gradual basis as usually recommended for a change of diet. Indeed he has lost some weight whilst on it but I'd rather he got slimmer without his guts being damaged, obviously..