Some decent suggestions, so thanks for that. Unfortunately i told my mum a few days after and the look on her face suggested so she wont be offering to clean up again.
Here’s a little video of the two boys, Finn and Jake. Jake manufactures the hair gel and applies it to Finn using the traditional pelvic head massage method (not shown in clip). The reason why one guinea pig like to hump another’s head is completely unknown to me. He’s cute, but not that cute 😀
[video]https://www.youtube.com/watch?v=E7M2H0h31Ac&feature=youtu.be[/video]