solitary bee/ladybird box

Hi chaps - I have been working really hard this year to put up places for animals in my garden and I am now totally chemical free (but still learning lots about it!!!)

Anyway, my solitary bee/lady bird box has 4 of the holes blocked up with pale green stuff and 2 of the smaller holes blocked with yellow stuff? I know there are 3 bees living in there, but is this good? Does it mean I have animals in there of is it something else? Couldn't find anything online when i looked (quickly) so thought someone here might know?

 

As long as the bees can still go in and out I wouldn`t worry about it. They have probably blocked them off themselves to cut down the number of entrances.:thumb:

 

thanks :-)