This toy is for the advanced forager. Each toy comes with two different sets of lids to accommodate large or small kibble. The holes can also be covered up to increase the challenge based on your cats' skill level.
For slow starters we recommend not putting the lids on at all and filling the "beakers" all the way up so that they can very easily eat off of the top or gently nudge and tip the beaker to obtain food. Once that is successful the lids may be added.