We listened when we kept getting requests for our refills. Due to COVID we couldn’t get the bottles we needed, but we found these and are pretty happy with the size. We are able to concentrate our formula to be able to provide numerous refills and have a couple of options from you to choose from. Just choose which size, color and scent. You can use this formula in ANY foam bottle. 
Our 7oz bottle contains approximately 2-3 refills due to concentration. Water will need to be added to lessen concentrated soap. 
Our 13 oz bottle contains approximately 6-10 refills. Water will also need to be added to lessen concentrated soap. 
These estimates of usage is depending on how much you choose to add with water.