DS peed on the bathmat this evening - the in laws were kindly babysitting. When we got home we were told that DMIL had thrown away the bathmat - in the outside bin, drenched with both water and pee. Rubbish won't be collected for another week. I was livid at 1) the wastefulness as would have just washed in, and 2) why on earth she'd put it in wet, as whilst I'm not gonna eat my dinner from my outside bin I'd also rather not needlessly invite bacteria and mould to it. She said she put it in a bin bag if that helps.
DH is telling me I'm being needlessly irate and should 'just' be grateful for the babysitters - thoughts?!