Hi all. I've been searching on web for some ideas and thought I'll join you to see if you could help! I have 6 entire boars- in 3 pairs. Two pairs are fostered and one my own (rescued). They're kept in my spare room and in 120-130cm indoor cages (have other pets,too so don't trust c&c). Until now I've used fleece, but have problem with odour. All piggies had bath not long ago and cages are swept am and entire fleece change pm (one pair is very clean so lasts 3 days). There's litter tray in every cage below hayrack and they do use it. But the room smells of dirty cages! I scrub cages and litter trays with vinegar water daily (found it to work better than cage cleaners!). It's not smell like they're marking as if cages were over cleaned, but like dirty cage. I air the room during day,too. I made my fleece liners myself (fleece/ absorbent pad/fleece) and washed, dried it several times first, wash on high with prewash and don't use softener. I was so disappointed I changed all cages to hemp yesterday and the smell is gone! I only spot cleaned and changed litter trays today and the different is unreal! I can actually leave the door opened without my whole house smelling! Please don't think I don't understand every pet has it's natural odour, I have 13 pets at home in total. But I never had issue like this before. What have I done wrong? Ive read about this miracle uhaul blankets from US, but none in UK I found are made out of denim so unsure if they would work? Is there anyone else who found fleece to be problem?