Red litter: blood in the urine. Blue litter: high alkaline content, which may indicate a urinary tract infection. Bright green litter: abnormal acidity, which may indicate a metabolic disorder.

PrettyLitter is made of super absorbent, lightweight silica gel. Silica gel crystals are extremely absorbent, more so than other litter types, so you need less litter to do the same job. The long-lasting, non-clumping litter means lighter trash bags, less scooping and less trips to the store.

PrettyLitter is a non-clumping litter. The super dry silica gels absorb the urine and odor, trapping it inside as the water in the urine evaporates out. The solid excrement is the only waste you need to scoop and dispose of. Just throw it away like you normally would and replace all of the litter every month.

Those are not recommended to eat because the bags are considered a choking hazard. While we would never suggest ingesting litter, the gel crystals are household-safe. The litter is not absorbed by the bowel and does not swell in the presence of humidity.

Pretty Litter is lighter in weight, less dusty, and more expensive than traditional clay litter. It doesn't clump and is completely non-toxic, whereas clay litter is usually clumping and contains harmful silica dust.

greenish-yellowish For instance, tap water has the normal pH range found in cats. Therefore, when pouring tap water into the litter, the transparent crystal litter should turn greenish-yellowish – the color of a healthy cat's urine.

Not only does one bag last an entire month, but the silica litter is super-absorbent and lightweight. What really makes Pretty Litter worth it, however, is the fact that it is designed to alert you to changes in the pH of your cat's urine as an indication of potential health problems like urinary tract infections.

PrettyLitter uses a silica gel formula with advanced odor control. It is a non-clumping litter and the super-absorbent gels trap cat urine and foul odors inside for better odor control. Our litter is made of silicia gel crystals, making it completely safe for your cat and for your home.

Silica gel is not thought to be toxic, but it can cause an obstruction if ingested by a cat.

Pretty Litter is definitely expensive compared to most other cat litters. At $24 for a six-pound bag, the price comes out to $4/lb.

Cheat Sheet: Our Top 5 Crystal Cat Litters

• Pretty Litter. Pros.
• Dr Elsey's Precious Cat Crystal Attract. Pros.
• Ultra Pet Micro Crystals Cat Litter. Pros.
• Fresh Step Crystal Cat Litter. Pros.
• Litter Pearls Micro Crystals Cat Litter.

PrettyLitter is made of silica gels and produces low dust. It is non-toxic and household friendly for both humans and animals.