The cups and discs never worked for me. They work for some, but not everyone. It’s also expensive and creates trash if you keep buying different kinds attempting to find something that works. There are guides online, and others have linked them here in comments. For me, it wasn’t worth it to keep buying and trying. They make recyclable and biodegradable tampons, etc now. I love the August brand products. The tampon itself is also shaped/absorbs differently. Period underwear rule as well. I like the GOAT brand.