No tube present
This animal medical company needs to take a bit of a look at its packaging policy. If they’re sending out one tube of “spot-on solution” then perhaps they only need to use one blister pack, and not go to the bother of printing “no tube present” on the other two.
I guess that it’s nice that they try to reassure their customers that the other tubes haven’t been lost in the post, or eaten by the dog they’re meant to be treating. Hours searching for tiny tubes could have been saved. It surely would have been a better idea just to send one pack, though.