This didn't stop the cups from forming rings around the waterline. I'm not sure if that's what it's supposed to do, but that's what I was looking for. But there are stars deducted for packaging/instructions for use. They are quite large and only fit in one spot in the toilet tanks, near the water inlet, which is where the instructions say not to place them. Okay, maybe just my toilet. The instructions say not to remove the plastic wrap. Because of this, it is difficult to drown them without piercing the shell. A blue fabric (I used it for three toilets) didn't come out of the foil until I tore it. I got a blue finger on this maneuver. So clumsy to use and I didn't get the results I was looking for. But they last a long time (more than a month so far), so that's a plus compared to puck options, which reviewers say only last about a week.
Vileda mop with Ultramax telescopic handle
12 Review
Scrub Daddy Sponge Set: Scratch-Free Scrubbers for Dishes and Home - Deep Cleaning, Multi-use - 6 Pack - Odor Resistant - Dishwasher Safe - Soft in Warm Water, Firm in Cold
11 Review
FISH-D-FUNK Odor Eliminator Wipes (30 Wipes per Pack)
10 Review
π½ Powerful 6Pack Pumice Stone Stick for Effortless Toilet Bowl Cleaning - Removes Stubborn Rings, Ideal for Bath, Household, Kitchen, Spa, Pool, Grill, and More!
10 Review
Poo-Pourri Original Citrus Refill Bottles - 9-Ounce & 1.4-Ounce Compact Refillable Bottle
11 Review
Air Wick Essential Oils Freshener Refill, Blue Agave and Bamboo Scent, Pack of 5
11 Review
Air Wick Plug in Scented Oil 5 Refills, Fall Scent: Ripe Cranberry And Currants, Essential Oils Air Freshener (5x0.67oz), Packaging May Vary
11 Review
Nature Fresh Bamboo Charcoal Air Purifying Bags - 10 Pack of 100g Activated Charcoal Bags for Home, Closet, and Car Odor Elimination and Freshness
12 Review