Small animals are prone to urinary trouble partly because they often don't drink as much as they should from a bottle they have to work at, and a supplement built around cranberry — the ingredient most associated with urinary health across species — is a reasonable everyday add-on rather than a treatment.

Supreme Science Selective's Urinary Care supplement is made from wheat flour, ground timothy hay, ground dried locust beans, flaked oats, soya oil, ground peas, linseed, dried dandelion (1%), ground dried cranberries (1%) and dried echinacea (1%), with concentrated carrot and blueberry. Crude protein is a minimum 8.0%, crude fat a minimum 2.0%, crude fibre a maximum 12.0% and moisture a maximum 10.0%. Supreme Science's own guidance is 1-2 treats a day.

• 100g pack
• Suitable for rabbits, guinea pigs and chinchillas
• Contains cranberry, dandelion and echinacea, each at 1%
• Crude protein (min) 8.0%, crude fibre (max) 12.0%
• Supreme Science's guidance: 1-2 treats per day, alongside fresh water

What the label does not say. This is a complementary supplement, not a treatment for an existing urinary problem — a small animal straining to urinate, producing little or no urine, or showing blood in the urine needs a vet urgently, not a supplement. It's a daily-routine product, not a fix for symptoms already present.

Who it's for: owners of a healthy rabbit, guinea pig or chinchilla wanting a routine urinary-support add-on, rather than something to reach for once a problem has started.