hi all,after months of getting plagued with cats i'm now at the end of my tether after one came over the roof of my loft into the birds while i was there thankfully doing no damage,but it's coming near racing season where my birds have to come home from training and come into the loft on their own accord cos i have to work and although having no problems in previous years this year i have my doubt's anyway i seen the cat detterent advertised in the BHW by paul smith and just wondered if anyone had purchased this detterent and did they find it useful and would appreciate their feedback if they don't mind atb martin