I would be the same if it was only the bikes with Marathon Plus tyres, but the trailer's 16" non-MP tyres are a magnet for everything, especially the nearside one running in the gutter detritus.I've had so few punctures that by the time I get to use the kit it's well out of date. Must check it again.
However with QD dropout wheels on the trailer I have either easy repair or the tube-swap option when it's raining.
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