In the foam sprayers dilution is super important.
If you are using an all purpose cleaner, you will want to use a minimum of 5:1 (5 parts water to 1 part APC).
Since car wash soap is a thicker solute, a 1:34 ratio tends to work really well.
After adding water & soap into the canister, we recommend taking a mixing utensil and evenly distributing the soap in the container (stir, do not shake). This will prevent clogging.
When it comes to the foamers, less is more, start with the least amount and work your way up.