Quick answer: what you actually need before day one

You do not need a 12-piece potty training starter kit. Most of it ends up in a closet after three weeks. What you do need are four things that work together: a well-sized standalone potty chair for early training, a toilet seat reducer with handles for the transition to the full toilet, a stable non-slip step stool for hand-washing and toilet access, and a small supply of training pants or moisture-signaling underwear for awareness building.

Everything else, including musical potties that play a victory jingle, themed toilet targets, and elaborate reward-chart systems, is optional. Some children love the extras; many ignore them. Start with the four essentials, then add if needed.

The American Academy of Pediatrics recommends waiting for behavioral and physical readiness signs rather than starting at a fixed age. Most toddlers show readiness between 18 and 24 months, with full training often not complete until closer to 36 months. Pushing before readiness tends to extend the process, not shorten it.

Potty chairs: picking the right size for your child

A standalone potty chair is the usual starting point for children between 18 and 24 months. The floor-level seat removes the height anxiety that comes with a full toilet and lets children plant their feet flat, which makes it easier to produce a bowel movement.

What to look for:

  • Seat opening no wider than about 7 inches across so a small toddler does not sink in or feel unstable.
  • A splash guard (especially for boys), though some children find tall splash guards uncomfortable. The BabyBjorn Smart Potty has a lower-profile guard that most toddlers tolerate well.
  • Removable inner bowl. One-piece designs that cannot be separated are genuinely harder to clean.
  • Weight below 1.5 lb so a toddler can carry it independently, which encourages ownership.

Brands that hold up:

The BabyBjorn Potty Chair weighs 1.1 lb, has a single curved seat that is easy to wipe clean, and has no screws or crevices that trap waste. The Fisher-Price Learn-to-Flush Potty adds a flush-handle for role-play familiarity, which some children find reassuring during the full-toilet transition. The Summer My Size Potty mimics a standard toilet shape and even has a fake tank, which some toddlers respond well to.

Cons to be honest about:

  • Standalone potties require emptying and rinsing after every use. If you have a newborn at home simultaneously, this adds to the mental load in a real way.
  • Children who grow attached to a standalone potty sometimes resist the full toilet for months after the recommended transition. Plan the transition deliberately from the start.
  • Cheap potties with thin plastic crack at the bowl-to-base joint within a few months of daily use. This is worth paying slightly more to avoid.

Toilet seat reducers and step stools: the transition gear that matters most

Once a child is reliably using the standalone potty and is around 24 to 30 months, introducing a toilet seat reducer with a matching or paired step stool is the natural next step. The seat reducer narrows the standard toilet opening (typically 10 to 11 inches across) to a toddler-appropriate size of roughly 6 to 7 inches, and the step stool lets small legs reach a surface for leverage.

Seat reducer features worth paying for:

  • Handles on each side. Gripping the seat sides helps children brace for the effort of a bowel movement and reduces forward-lean fall risk. The IKEA Lockig and the Contours Toast seat both include integrated handles.
  • Soft-close or splash-deflector lip at the front. The Mayfair NextStep 2 built-in-seat lid (current pricing tocurrent pricing range) is a full toilet seat with a built-in child ring that flips up, removing the separate reducer entirely. Less to store, nothing to lose.
  • Stable fit. A reducer that rocks on the porcelain lip is a safety issue. Look for silicone grips on the underside that press against the toilet rim.

Step stool specifications:

The step stool must be non-slip on both the bottom feet and the standing surface. For a standard toilet height of 15 to 17 inches (measured floor to seat), a stool between 6 and 9 inches places most 2 to 3-year-olds at a position where their feet rest flat on the stool while seated on the toilet. This foot-flat position is also what the CPSC’s bathroom safety guidelines identify as reducing fall risk from the toilet.

The Squatty Potty Jr. (7 inches tall, curved front edge that wraps the toilet base) is a well-researched option in this category. The IKEA Bolmen (7.5 inches, rubber-tipped legs,current pricing) is an inexpensive backup or second-bathroom stool. For hand-washing height at a standard 32-inch vanity, a stool of 8 to 10 inches is typically needed for a 24 to 36-month-old.

Cons:

  • A stool left on a wet tile floor after bathtime is a genuine slip hazard for adults, not just children. Build in a routine of moving it off the floor or hanging it after each use if your household has multiple people sharing the space.
  • Seat reducers stored improperly (leaned against a wall) tip and fall, which startles children and can create a fear of the toilet. Wall-mounted hooks or a dedicated caddy prevent this.
  • Some children reject reducers entirely and prefer the standalone potty much longer than parents expect. Forcing the transition too early can stall progress.

Training pants and moisture-awareness gear: what actually helps

Training underwear serves a specific purpose: it lets children feel wetness (unlike a diaper, which wicks it away) while containing enough to prevent a full puddle on the floor. Pull-ups with leak guards occupy a middle position and are useful for outings or naps when you want containment but not full diaper passivity.

What training pants actually do:

Brands like Gerber Waterproof Training Pants (thin inner terry layer, light PUL outer shell) and Charlie Banana Reusable Training Pants (about 3 to 4 oz of absorbency) let toddlers register the sensation of wetness, which the AAP and child development research identify as an important feedback loop for training.

Pull-up style disposables (Huggies Pull-Ups, Pampers Easy Ups) are convenient but the absorbent core means the child may not feel wet at all, which reduces the sensory feedback that drives awareness. They are fine for travel and for overnight, but during active daytime training many parents see faster progress with cloth training pants worn around the home.

Quantity to have on hand:

Plan for at least 10 pairs of training underwear per day of home training in the early phase. The most common complaint from parents who start with 4 or 5 pairs is running the washing machine twice a day.

A note on reward systems:

Sticker charts work for some children and do nothing for others. If you use one, link the reward to the attempt (sitting on the potty), not to the success. The AAP specifically advises against punishing accidents, as this reliably increases anxiety and slows progress.

Cons:

  • Cloth training pants with a PUL layer take longer to dry in the dryer than regular underwear. Plan for air-drying overnight if you are going through 8 to 10 pairs per day.
  • Very absorbent training pants (thick terry core) defeat the moisture-signal purpose. Thin is better for awareness; save the thicker ones for nights or car rides.
  • Switching back and forth between diapers and training pants mid-day can confuse some children. Try to keep the signal consistent during waking home hours if possible.

Bottom line: the checklist at a glance

Below is the four-category essentials list for children ages 18 to 36 months. Link clicks go to Amazon search results; check current Amazon price before buying as prices change frequently.

1. Standalone potty chair (start here for most children at 18 to 24 months)
– BabyBjorn Potty Chair — 1.1 lb, removable bowl, no crevices
– Fisher-Price Learn-to-Flush Potty — flush handle for transition readiness
– Summer My Size Potty — toilet-shaped body for familiarity

2. Toilet seat reducer with handles (transition phase, approximately 24 to 30 months)
– Contours Toast Seat Reducer — side handles, silicone grip base
– Mayfair NextStep 2 Built-In Child Seat — full toilet seat with integrated child ring, no separate reducer

3. Non-slip step stool (6 to 9 inches for standard toilet and hand-washing sink)
– Squatty Potty Jr. — 7 inches, curved base hugs toilet, non-slip feet
– IKEA Bolmen Step Stool — 7.5 inches, rubber-tipped legs, budget pick

4. Training underwear (cloth, 10+ pairs minimum)
– Gerber Waterproof Training Pants — thin terry, PUL outer, fast drying
– Charlie Banana Reusable Training Pants — 3 to 4 oz absorbency, good moisture signal

Two things to skip for now:

A cushioned toilet seat reducer with foam is comfortable but the foam core traps bacteria and deteriorates fast. Plain molded plastic is easier to clean and lasts longer. Also skip novelty potties that require batteries or play songs unless your child is unusually motivated by them after a trial run. Many children find the unexpected sound startling and refuse to use it again.

Before you buy anything: run a CPSC recall check at cpsc.gov/Recalls using the brand and model name. The CPSC has issued recalls on potty chairs and children’s stools due to sharp edges, unstable bases, and fall risk. A five-minute check before purchase is worth it.

For age-specific guidance on developmental readiness, the CDC’s milestone tracker for 18 to 36-month-olds at cdc.gov is a useful complement to the physical gear checklist above. Gear does not train children. Readiness, consistency, and low pressure do. The checklist above just removes the “what do I actually need?” guesswork so you can focus on the process.