Need advice about a good diet food please.

[Kfamr]

Firstly, How much kibble are you feeding them? I wouldn't change foods, but reduce the amount and try one of the followings.

Cut out the wet food. Find something else to entice them.
A few ideas:
Add one of the following:
-Canned pumpkin
-Sodium-free canned green beans
-Any kind of cooked or pureed squash

Don't over do it, just maybe a generous spoonful of one since your guys are smaller. These all act as (good) fillers and don't have the useless ingredients and sugars that wet dog food does.

If you don't feel you need to reduce the amount of food:

Add water to their food and stir it around (NOT hot water, it will destroy any heat sensitive nutrients, just room temp. water.)

Of course, they may have added on some extra pounds with the winter months, however definetly get them some healthy exercise, too. As someone else mentioned, a food with a lower protein amount will help with weight loss.