You aren't supposed to take pet waste to the tip where i live, there is a specific sign up, it is classed as 'Toxic Waste' lol, and if you leave a black bag they will open it up and give it back to you if they don't like whats in it! We have a black bin for non-recyclabes and a green bin for recyclable, but our black bin gets full up, and we will be fined for putting bags out so i give it to my man's dad for compost, although he is actually building a new bin because i give him too much! I actually have between 6 and 12 black bin bags full a week!