Nothing you can give at home. That indicates an infection or some type of blockage (they are prone to stones as well) somewhere in the urinary tract. They need antibiotics to treat and the sooner the better as infection can spread to kidney's or bladder and blood in the urine usually means your pretty far along. The way you will find out which antibiotic or treatment is likely to be the most effective is to do a urinalysis and possibly a culture to discover what the cause may be.
