Looking for some advice please from owners of elderly cats.One of our rescue cats is nearly 18 and over the past few months we have noticed her becoming a bit incontinent ie she's pooing randomly around the house (possibly peeing as well, I sometimes get a smell but can't find specifically where it's from). She's gone quite old and frail looking but other than the toilet issues she's always been in good health, other than vaccinations etc we've never had to bring her to the vet even. Is this incontinence an inevitable part of getting old, or can it be prevented? Vets are expensive here so while I'd definitely bring her if she was sick, I don't want to bring her if there's nothing he can do. She eating and behaving completely normally other than pooping on my carpet when she gets caught short, and while she looks frail, she ain't, she's still top of the pack here between the other cat, the dog and her 