Checking if non-integer values exist in a range

Hi

I want to make a macro whether columns R-Z contain values which don't end in 0.25, 0.5, 0.75 or 0.0 (with the aim of deleting the rows that do). I'm thinking that multiplying the cell value by 4 and testing whether the number is an integer will be the best way about it, but can't find a way to check for integers.

Is there an IsInteger type function?

Thanks, works perfectly.